What is cancer pain

Cancer pain is pain caused by the tumour itself, by the treatments used to control it, or by the way the body reacts to long illness. It is not a single thing. A bone metastasis hurts in one way. A nerve crushed by a pelvic mass hurts in a very different way. The mouth ulcers that follow a cycle of chemotherapy hurt in a third way. Good pain care starts by naming which kind of pain a patient actually has, because the medicine that calms one kind will often do nothing for another.

Pain in cancer is treatable. That sentence is the starting point of every modern guideline, from the World Health Organization analgesic ladder first published in 1986 and updated since, to the NCCN Adult Cancer Pain guideline, to the ESMO clinical practice guideline on cancer pain, to the Indian Association of Palliative Care consensus statements written for Indian practice. None of these documents promise a pain score of zero. What they promise is that almost every patient can be brought to a level of pain that lets them sleep through the night, eat a meal, sit with family, and keep some of the things they care about.

The kinds of cancer pain, and why the kind matters

Nociceptive somatic pain

Somatic pain comes from skin, muscle, bone, or joint. A bone metastasis in the spine, a rib fracture from myeloma, a surgical wound after a mastectomy: these are somatic. Patients describe them as aching, throbbing, sharp on movement, easy to point to with one finger. These respond well to paracetamol, NSAIDs where safe, and opioids. Bone pain in particular often needs a bisphosphonate or denosumab and, where the lesion is focal, a single fraction of palliative radiotherapy.

Nociceptive visceral pain

Visceral pain comes from organs. A liver capsule stretched by metastases, a bowel partly obstructed by an abdominal mass, a pancreatic tumour pressing on the coeliac plexus: these are visceral. Patients describe them as deep, cramping, hard to localise, sometimes referred to a different part of the body. They respond to opioids and to specific procedures such as a coeliac plexus block for upper abdominal cancer pain.

Neuropathic pain

Neuropathic pain comes from a nerve that has been damaged or invaded. Chemotherapy-induced peripheral neuropathy from oxaliplatin, paclitaxel or vincristine. A brachial plexus invaded by an apical lung tumour. Post-mastectomy intercostobrachial neuralgia. Patients describe it as burning, shooting, electric, pins and needles, sometimes with a numb area inside the painful area. Plain opioids help less than people expect. The first line is usually a tricyclic antidepressant such as amitriptyline, an SNRI such as duloxetine, or an anticonvulsant such as gabapentin or pregabalin, sometimes in combination with a low-dose opioid.

Breakthrough pain

Breakthrough pain is a sudden flare of pain on a background that is otherwise reasonably controlled. It can be triggered (turning over in bed, a dressing change, coughing) or it can come on with no warning. It often peaks in three to five minutes and lasts under thirty. The treatment is not a higher round-the-clock dose. The treatment is a fast-acting rescue dose, usually immediate-release morphine, kept by the bedside and used as needed.

Many patients have more than one kind at the same time. A woman with metastatic breast cancer may have somatic pain from a vertebral lesion, visceral pain from liver capsule stretch, and neuropathic pain from taxane neuropathy in her feet, all in the same week. Each needs its own answer. That is why a careful history is more useful than a higher dose of any single drug.

How we assess pain

You cannot treat what you have not measured. Every cancer pain visit at HealOnco starts with a structured assessment. The aim is not to score the patient. The aim is to understand the pain well enough to choose the right medicine. A useful assessment covers nine things: where the pain is and whether it moves, what it feels like in the patient’s own words, how bad it is right now, at its worst in the last twenty-four hours, and on average, what makes it better and what makes it worse, how it changes through the day, what it is stopping the patient from doing, what medicines have been tried at what dose and with what effect, whether sleep is broken, and whether mood, appetite or bowel habit have shifted.

Most centres also use a simple numeric rating from zero to ten. A score of one to three is mild, four to six is moderate, seven to ten is severe. The number is not the point. The change in the number after a treatment is the point. The Brief Pain Inventory and the Edmonton Symptom Assessment System are the two tools most commonly used in oncology and palliative care, and the IAPC has translated and validated versions for several Indian languages. For patients who cannot speak, the team watches the face, the breathing, the body language, and the response to comfort, using tools such as the PAINAD scale. Reassessment is constant.

The WHO analgesic ladder and how it is used now

The WHO ladder is the spine of cancer pain care. In its original 1986 form it had three steps. Step one was a non-opioid such as paracetamol or an NSAID, with or without an adjuvant. Step two was a weak opioid such as codeine or tramadol, on top of step one. Step three was a strong opioid such as morphine, on top of step one. The ladder is still useful, but modern practice has bent it in two ways. First, for patients who present with severe pain, most guidelines now skip step two and go straight to a low dose of a strong opioid. Second, adjuvants are no longer optional add-ons; for neuropathic pain in particular, the adjuvant is the main medicine and the opioid is the helper.

The principle that has not changed is the principle of by the clock, by the mouth, by the ladder, for the individual. Pain medicines for cancer are taken on a fixed schedule, not only when the pain returns. Oral routes are preferred where possible. The dose is titrated to the individual until the pain is controlled or until side effects become the limit. There is no maximum dose of morphine. The right dose is the dose that works for that patient, with side effects that the patient finds tolerable.

Non-opioid medicines

Paracetamol is the workhorse of mild cancer pain and a useful add-on at every step. It is gentle on the stomach, safe in most patients with normal liver function, and can reduce the opioid dose needed for the same level of comfort. The usual adult ceiling is around three to four grams per day, lower in patients with liver disease, alcohol use, or low body weight.

NSAIDs such as ibuprofen, naproxen, diclofenac, and the COX-2 selective drugs are useful for bone pain and inflammatory pain. They have to be used with care. The risks are gastric ulceration, kidney injury, fluid retention, raised blood pressure, and a small but real increase in cardiovascular events with long-term use. In patients on chemotherapy with low platelets, NSAIDs are usually held. In patients with kidney disease, they are usually avoided. When they are used, a proton pump inhibitor is often co-prescribed to protect the stomach.

Opioids: the heart of the toolkit

Morphine is the reference strong opioid for cancer pain in most of the world, including India. It is cheap, available in oral immediate-release liquid, oral immediate-release tablets, oral sustained-release tablets, and injectable forms. It can be given by mouth, under the tongue, into the rectum, under the skin, into a vein, or into the spinal space. The starting dose for an opioid-naive adult is small, usually titrated up over a few days until pain is controlled.

Oxycodone is an alternative strong opioid available in India as immediate-release and sustained-release tablets. Some patients tolerate it better than morphine, with less itching or nausea. The cost is higher. Fentanyl is a strong, fast, short-acting opioid most often used in cancer pain as a transdermal patch that lasts seventy-two hours. The patch is useful for patients who cannot swallow, who have steady pain, and who are already on a stable opioid dose. It is not the right choice for opioid-naive patients or for unstable pain that needs frequent titration.

Methadone is a strong opioid with an unusual pharmacology. It has a long and variable half-life, it acts on the NMDA receptor as well as the opioid receptor, and it is useful in difficult cases, especially neuropathic cancer pain that has not responded to other strong opioids. It needs an experienced prescriber. Buprenorphine is a partial opioid agonist available as a sublingual tablet and a transdermal patch, sometimes used in patients with kidney impairment because it is less dependent on renal clearance.

Tramadol sits in the weak-opioid box. It has a place, especially in patients with moderate pain who are not ready for morphine. It is not a substitute for a strong opioid in severe pain, and at higher doses the side effect profile becomes uncomfortable, with nausea, dizziness, confusion in the elderly, lowered seizure threshold, and serotonin syndrome risk if combined with SSRIs or SNRIs. Codeine is also a weak opioid. It is metabolised by the liver to morphine, and a meaningful share of patients are slow metabolisers in whom codeine simply does not work.

Side effects and how we manage them

Constipation is the side effect that does not go away. Every patient on a regular opioid needs a regular laxative, started on the same day as the opioid, not later. Stimulant laxatives such as senna, with a stool softener if needed, are the usual first line. For opioid-induced constipation that resists ordinary laxatives, peripherally acting mu-opioid receptor antagonists such as methylnaltrexone or naloxegol can help. Nausea is common in the first few days and usually settles in a week. Sleepiness is common in the first few days too, and also tends to settle. Respiratory depression is the side effect that frightens patients and families the most. It is in fact rare in cancer patients on a carefully titrated oral opioid for pain, because pain itself is a powerful respiratory stimulant and tolerance to the respiratory effect develops quickly. Naloxone is kept on hand in inpatient and daycare settings.

Tolerance, dependence, and addiction are three different things, and patients and families often confuse them. Tolerance is the body needing a higher dose over time for the same effect, and it is mild and slow in cancer pain. Physical dependence is a withdrawal syndrome if the drug is stopped abruptly, and it is real but easily managed by tapering. Addiction is compulsive drug-seeking despite harm, and it is uncommon in cancer patients who take opioids as prescribed for genuine pain. None of these is a good reason to leave a patient in pain.

Adjuvant medicines

Antidepressants. Amitriptyline, nortriptyline, and the SNRIs duloxetine and venlafaxine are first-line for neuropathic cancer pain. They also help mood and sleep. Anticonvulsants. Gabapentin and pregabalin are first-line for neuropathic pain and are often combined with a low-dose opioid. The dose is titrated up slowly to avoid sedation and dizziness. Corticosteroids. Dexamethasone is one of the most useful drugs in cancer pain. It reduces oedema around a tumour and is used for spinal cord compression, raised intracranial pressure, painful bone metastases, liver capsule pain, and bowel obstruction.

Bone-targeted drugs. Zoledronic acid, pamidronate, and denosumab reduce skeletal pain, fracture risk, and the need for radiotherapy in patients with bone metastases from breast, prostate, lung, kidney and myeloma. Antispasmodics such as hyoscine butylbromide help colicky visceral pain from bowel obstruction. Muscle relaxants baclofen and tizanidine are used for painful muscle spasm. Topical agents such as lidocaine 5% patches are useful in localised neuropathic pain such as post-mastectomy pain or post-herpetic neuralgia.

Interventional and procedural options

Palliative radiotherapy. A single fraction or a short course of external beam radiotherapy is one of the most useful interventions in cancer pain. It works well for painful bone metastases, painful nodal masses, brain metastases with headache, and bleeding tumours. Most patients feel a benefit within two to four weeks.

Nerve blocks and neurolysis. A coeliac plexus block is the classical interventional answer to upper abdominal cancer pain, especially from pancreatic cancer. A superior hypogastric plexus block helps pelvic visceral pain. An intercostal nerve block helps chest wall pain from rib metastases. A stellate ganglion block helps some cases of upper limb neuropathic pain. These are done under image guidance by a pain physician, usually on a daycare basis.

Intrathecal drug delivery. A catheter placed into the spinal fluid lets very small doses of morphine, sometimes combined with a local anaesthetic or clonidine, do the work that a much larger oral or intravenous dose would otherwise need. Vertebroplasty and kyphoplasty. Cement is injected into a vertebra that has collapsed from a metastasis, to stabilise it and reduce pain on movement. Surgical fixation of a long bone at risk of pathological fracture gives immediate relief. Radiofrequency ablation, cryoablation, and high-intensity focused ultrasound are used in selected cases of focal painful tumour.

Non-drug approaches that actually help

Cancer pain is not only a signal in a nerve. It is also a feeling in a person, and the feeling is shaped by sleep, mood, fear, family, and meaning. Non-drug approaches do not replace medicines. They make medicines work better and let the dose stay lower. Physiotherapy keeps joints moving. Occupational therapy adapts the home so simple tasks no longer hurt. Heat and cold applied locally help muscle and joint pain. Gentle massage helps tension and the feeling of being cared for. Acupuncture has reasonable evidence in chemotherapy-induced peripheral neuropathy and in joint pain from aromatase inhibitors.

Counselling, cognitive behavioural therapy, and mindfulness-based stress reduction reduce the emotional weight of pain, improve sleep, and help patients keep some of their normal life. Anxiety and depression amplify pain. Treating them is part of treating pain. Spiritual care matters to many Indian patients. A conversation with a hospital chaplain, a temple visit, a quiet half hour with a religious text, the presence of family during prayer: none of this is soft. All of it changes how a person carries pain.

A day at HealOnco for pain care

A first pain consult is a sit-down session with the pain and palliative care team, usually forty-five to sixty minutes. The doctor takes a full pain history, runs a structured assessment, reviews imaging, and builds a written plan in the patient’s language. For patients on strong opioids, a nurse trains the family on dosing, rescue doses, laxatives, and danger signs before the patient goes home. Follow-up is typically weekly for the first two to three weeks, then every two to four weeks once pain is controlled. For patients needing a nerve block, radiation, or a vertebroplasty, the team schedules the procedure on a daycare basis and the patient goes home the same day in most cases.

Cost of cancer pain care in India

Scenario	Typical regimen	Indicative monthly cost
Mild pain on a non-opioid	Paracetamol 1g three or four times daily, with or without an NSAID	Rs 300 to Rs 800
Moderate pain on a weak opioid	Tramadol or low-dose codeine plus paracetamol, plus laxative	Rs 600 to Rs 1,500
Moderate-severe pain on oral morphine	Sustained-release morphine twice daily plus immediate-release for breakthrough, plus laxative and antiemetic	Rs 1,500 to Rs 4,000
Severe pain on transdermal fentanyl	Fentanyl patch every 72 hours plus oral morphine for breakthrough, plus laxative	Rs 4,000 to Rs 10,000
Neuropathic pain regimen	Pregabalin or gabapentin plus duloxetine or amitriptyline plus a low-dose opioid	Rs 800 to Rs 3,000
Bone metastasis with monthly bisphosphonate	Zoledronic acid IV every 3 to 4 weeks plus oral analgesia	Rs 2,000 to Rs 6,000 per infusion plus medicines
Single fraction palliative radiotherapy	One session, outpatient	Rs 6,000 to Rs 20,000 (one-time)
Coeliac plexus block	Image-guided procedure, daycare	Rs 25,000 to Rs 70,000 (one-time)
Intrathecal pump	Implant plus monthly refill	Rs 2,00,000 to Rs 6,00,000 implant, then refill cost

These are ranges, not promises. The actual cost depends on the drug brand, the centre, and the complexity of the case. HealOnco prepares a written estimate for every patient before treatment begins.

Our pain and palliative care team

HealOnco brings together pain physicians, palliative medicine doctors, oncology nurses, and counsellors who work as one team with the treating medical, surgical, and radiation oncologists. Our pain team is available at every HealOnco centre and via the tele-consultation line for patients who cannot travel.

Our centres

HealOnco Chandigarh is our flagship centre with a dedicated pain and palliative care service, a procedure suite for image-guided nerve blocks, and a daycare unit. Additional HealOnco centres and partner hospitals across north India deliver the same pain protocols.

Side effects and mitigation at a glance

• Constipation: start senna on day one of any regular opioid; add methylnaltrexone if resistant.
• Nausea: metoclopramide or haloperidol for the first week; usually settles.
• Sedation: reduce dose or switch opioid if it does not settle in a week.
• Respiratory depression: rare on careful oral titration; naloxone available for rescue.
• Itching, dry mouth, urinary retention: usually answer to a small opposing drug or an opioid switch.

What our patients say

“My father had pancreatic cancer and the pain was unbearable. HealOnco started him on oral morphine and arranged a coeliac plexus block within a week. He went back to eating with the family and slept through the night for the first time in months.” Family of a HealOnco patient, Chandigarh.

“I was terrified of morphine. The team sat with us, explained what it was and what it was not, and wrote a plan we could follow at home. My mother’s last months were comfortable.” Family of a HealOnco patient.

Frequently asked questions

Will morphine make my relative an addict?

No, not when it is taken as prescribed for genuine cancer pain. Addiction is uncommon in this setting. The body does become physically dependent, which means the drug should be tapered rather than stopped suddenly, but that is not the same thing as addiction. Leaving a patient in severe pain to avoid a risk that is rarely real does more harm than good.

Does taking morphine mean the end is near?

No. Morphine is a pain medicine. It is started when the pain calls for it, not when the disease has reached a particular stage. Plenty of patients live for months or years on a stable dose of morphine and keep working, travelling and being with family.

Will the dose keep going up forever?

Usually no. Most patients reach a dose that controls the pain and stay there, with small adjustments. If the dose suddenly needs to climb, the team looks for a new cause, such as a new metastasis or a new fracture, rather than just increasing the drug.

What do I do if a sudden flare of pain breaks through?

Take the rescue dose your team has prescribed, usually an immediate-release morphine tablet or liquid. Note how often you are needing it. If you are using more than three or four rescue doses in a day, the background dose probably needs to be raised, and you should call the team.

The morphine makes me terribly constipated. What can I do?

Start a laxative on the same day you start the opioid. Drink fluids if you can. Keep moving as much as your body allows. If the constipation does not respond, the team can prescribe a peripherally acting opioid antagonist that blocks the constipating effect without blocking the pain relief.

Are there alternatives to morphine?

Yes. Oxycodone, fentanyl, methadone and buprenorphine are all available in India and all have a place. The choice depends on the patient, the kidney function, the swallowing, the cost and the response. Switching opioids can rescue a patient who is stuck on one drug.

Will I be able to drive or work on these medicines?

For the first few days after starting or after a dose increase, no. After that, most patients on a stable opioid dose can return to driving and to work that does not require fast reaction times. The team will tell you when it is safe.

Can I take ayurvedic or homoeopathic medicines along with my pain medicines?

Tell the team exactly what you are taking, including any traditional remedies. Some interact with anticoagulants, with chemotherapy, or with the opioid itself. Most are safe alongside cancer pain medicines, but the team needs to know.

My pain feels like burning and electric shocks. Why is morphine not helping?

That is the pattern of neuropathic pain. Opioids alone do not work as well for it. The team will usually add an antidepressant or an anticonvulsant such as pregabalin or gabapentin, and that combination tends to work better than a higher dose of opioid alone.

Do I have to swallow tablets if I cannot keep food down?

No. Pain medicines are available as liquids, sublingual tablets, skin patches, suppositories, and injections under the skin. The team will choose a route that does not depend on swallowing.

Is radiotherapy for pain painful?

The treatment itself is painless, like having an X-ray. A short course or even a single session can shrink a painful bone deposit and bring relief within a few weeks.

Are nerve blocks safe?

Yes, in trained hands and with image guidance. Risks are small and are explained in writing before the procedure. For the right patient with the right kind of pain, a nerve block can replace a great deal of medication and a great deal of suffering.

Does HealOnco do home visits if my relative cannot travel?

We coordinate home palliative visits in our service cities through partner palliative care teams. Call us and we will arrange the right level of support.

Will pain medicines shorten the patient’s life?

Carefully titrated cancer pain medicines do not shorten life. There is reasonable evidence that good pain control is associated with better quality of life and, in some studies, with longer survival, probably because patients sleep, eat and move better.

Our town has no oral morphine. What do we do?

Call us. India’s NDPS rules now allow Recognised Medical Institutions to stock and dispense oral morphine, and a growing number of cancer and palliative care centres do so. If your town is not on that list, the HealOnco team can arrange a legal supply path through a partner centre.

When to call us urgently

• A new severe back pain with weakness in the legs, numbness around the buttocks, or trouble passing urine. This may be spinal cord compression and the window for treatment is short.
• A new severe headache with vomiting, drowsiness or confusion. This may be raised pressure in the brain.
• Sudden severe abdominal pain with vomiting and a swollen, hard belly. This may be a bowel obstruction or perforation.
• A sudden new pain in a long bone, especially after a small twist, that the patient cannot put weight on. This may be a pathological fracture.
• Pain that has stopped responding to the regular dose, or that has changed in character. The team needs to look at the cause, not only the dose.

Medically reviewed by

This page was medically reviewed by the HealOnco Pain and Palliative Care team on 8 April 2026.

Cancer pain care in top cities

• Cancer pain management in Delhi
• Cancer pain management in Gurgaon
• Cancer pain management in Noida
• Cancer pain management in Faridabad
• Cancer pain management in Ghaziabad
• Cancer pain management in Mumbai
• Cancer pain management in Bengaluru
• Cancer pain management in Hyderabad
• Cancer pain management in Chennai
• Cancer pain management in Kolkata
• Cancer pain management in Pune

Related supportive care

• Cancer nutrition
• Counselling and mental health
• Physiotherapy in cancer care
• Second opinion service
• Palliative care

References

1. World Health Organization. WHO guidelines for the pharmacological and radiotherapeutic management of cancer pain in adults and adolescents. WHO, 2018. https://www.who.int/publications/i/item/9789241550390
2. NCCN Clinical Practice Guidelines in Oncology: Adult Cancer Pain. https://www.nccn.org/guidelines
3. IARC Globocan 2022 India country profile. https://gco.iarc.fr
4. Government of India. NDPS (Amendment) Act 2014 and rules on Recognised Medical Institutions.
5. Indian Association of Palliative Care. IAPC consensus statement on pharmacological management of cancer pain. https://palliativecare.in
6. ESMO Clinical Practice Guideline: management of cancer pain in adult patients. https://www.esmo.org/guidelines
7. a tertiary cancer centre. Clinical practice notes on interventional cancer pain procedures. https://a tertiary cancer centre.gov.in
8. Finnerup NB et al. IASP Neuropathic Pain Special Interest Group pharmacological treatment recommendations.
9. Brief Pain Inventory and Edmonton Symptom Assessment System; Indian-language validations via IAPC.
10. NCCN Adult Cancer Pain guideline, section on opioid-induced constipation.
11. Society for Integrative Oncology and ASCO joint guideline on integrative therapies.