Managing side effects

A general principle: tell us early

The most important thing you can do about side effects is tell us about them — early, honestly, and in detail. A side effect noticed on day two of a cycle is much easier to treat than the same symptom ignored until day seven. Patients sometimes worry about "complaining" or "wasting our time". Please don't. Every regimen has expected side effects; we expect to manage them with you, and the only way we can do that is if you tell us what is happening.

"We are not trying to be heroes by enduring side effects in silence. The patients who do best are the ones who pick up the phone."

Nausea and vomiting

This is the side effect patients fear most, and it is also the one modern oncology has improved most dramatically. The anti-emetic drugs we use today are powerful and well-tolerated. Most patients on most regimens have little or no vomiting.

• Pre-medication. Every chemotherapy cycle includes IV anti-nausea drugs given before the chemotherapy starts. You will also be sent home with tablets to take regularly — not just when you feel sick.
• Take the tablets on schedule. Anti-nausea tablets work best as prevention. Don't wait until you feel nauseated to start them.
• Eat small, frequent meals. Five or six small meals a day are easier than three large ones. Bland, dry foods — toast, crackers, plain rice, khichdi, boiled potatoes — are usually well tolerated.
• Cold foods often work better than hot. They have less smell, which is half the battle. Cold yoghurt, fruit, kheer, custard, ice cream.
• Ginger genuinely helps — fresh ginger tea, ginger sweets, ginger biscuits. There is real evidence behind this, not just folk wisdom.
• Avoid your favourite foods on treatment days. If a particular dish becomes associated with nausea, you may not enjoy it again for a long time.
• Keep hydrated — small sips of water, lemon water, or electrolyte drinks throughout the day.

Call us if: you are vomiting more than three times in a day, cannot keep liquids down for more than 12 hours, are passing very little urine, or feel dizzy when standing.

Fatigue

Fatigue is the most universally reported side effect — and the most underestimated. It is not "feeling a bit tired"; it is a heavy, whole-body tiredness that sleep does not fully fix. It usually peaks in the few days after each treatment and lifts as the cycle progresses.

• Plan around your energy. If you know days two to five are your hardest, schedule important things for days seven to fourteen.
• The exercise paradox. This is the most surprising and best-supported finding in oncology supportive care: gentle, regular exercise reduces cancer-related fatigue. A 20-minute walk on most days, light yoga, or stationary cycling at a comfortable pace is genuinely helpful. Strict bed rest, paradoxically, makes fatigue worse.
• Conserve energy. Sit down to chop vegetables, prepare meals in batches on good days, accept help with housework and errands.
• Short naps, not long ones. A 20 to 30 minute nap in the afternoon helps; a three-hour nap disrupts night-time sleep and worsens the cycle.
• Check for treatable causes. Anaemia (low haemoglobin), low thyroid, depression, poor sleep, dehydration and uncontrolled pain all worsen fatigue and can be addressed.

Low blood counts and infection risk

Chemotherapy temporarily suppresses the bone marrow, which makes white blood cells (your infection defence), red blood cells (oxygen carriers) and platelets (clotting). The lowest point — called the "nadir" — typically falls between days seven and fourteen after a treatment.

Mouth sores and taste changes

Some chemotherapy drugs and many head-and-neck radiation regimens irritate the lining of the mouth. Symptoms range from mild soreness to painful ulcers that make eating difficult. Taste changes — food tasting metallic, bland, or strange — are also common.

• Saline rinses — half a teaspoon of salt and half a teaspoon of baking soda in a glass of warm water, rinsed gently four to six times a day. This is more effective than fancy mouthwashes and costs almost nothing.
• Avoid alcohol-based mouthwashes (Listerine and similar) — they sting and worsen the problem.
• Soft, cool, bland foods — dahi, yoghurt-based dishes, kheer, custard, mashed potatoes, well-cooked daal, soups.
• Avoid spicy, acidic, crunchy or very hot foods while ulcers are present — no chilli, no citrus, no hard biscuits, no piping-hot chai.
• Soft toothbrush, gentle brushing. Do not stop brushing — oral hygiene matters more than ever — but be gentle.
• For metallic taste: use plastic cutlery, add lemon or vinegar to bland dishes, try cold foods.
• Prescription rinses and gels are available for severe sores — ask us.

Constipation and diarrhoea

Both are common. Different drugs cause different problems, and even the same drug can do both at different times.

Peripheral neuropathy (tingling and numbness)

Several chemotherapy drugs (oxaliplatin, paclitaxel, docetaxel, vincristine, cisplatin, bortezomib, others) can affect the small nerves in the fingers and toes. Symptoms include tingling, pins and needles, numbness, cold sensitivity, and sometimes burning pain.

• Tell us early. Mild neuropathy usually improves after treatment ends. Severe neuropathy may take many months to recover, or may persist. Dose adjustments early can prevent it from becoming severe.
• Protect your hands and feet. Wear warm gloves and socks in cold weather (and inside air-conditioned rooms). Avoid handling very cold or very hot objects without gloves. Be careful walking barefoot — you may not feel small injuries.
• Check your feet daily — especially if you are diabetic. A small cut you can't feel can become infected.
• Medications can help. Gabapentin, pregabalin, duloxetine, and in some cases topical creams can ease neuropathic pain. We'll prescribe what's appropriate.

Skin and nail changes

Skin can become dry, sensitive, or develop rashes. Nails can become brittle, ridged, or discoloured. Some targeted therapies cause acne-like rashes; some chemotherapy causes hand-foot syndrome (red, painful, peeling palms and soles).

• Moisturise generously. A thick, fragrance-free moisturiser (paraffin-based or shea butter) applied twice a day prevents most dryness and cracking.
• Gentle, lukewarm showers — not very hot — and a mild soap. Pat dry, don't rub.
• Sun protection is essential. Many treatments make skin more sensitive to sun. Use SPF 50+ on exposed skin, wear a wide-brimmed hat, and avoid the midday sun. This matters even in winter in Lahore.
• Keep nails short and clean. Avoid acrylic nails and harsh manicures during treatment.
• For hand-foot syndrome: apply moisturiser frequently, avoid friction and pressure, soak hands and feet in cool water if sore.
• For acne-like rash: tell us — we have specific treatments (topical and oral) that work well.

Hair changes

Whether you lose your hair depends entirely on which drugs you are given. Some regimens cause complete hair loss; others cause none at all. Your doctor will tell you what to expect for your specific regimen.

• If hair loss is expected: it usually begins two to three weeks after the first cycle. Many patients find it easier to cut their hair short before this — it gives a sense of control.
• Scarves, caps, and wigs are all good options. A well-chosen scarf in a soft fabric is comfortable, practical, and respects local norms.
• Cold caps (worn during treatment to reduce hair loss) are an option for some regimens, though not widely available in Pakistan yet.
• Hair grows back. Usually starting two to three months after treatment ends. The new hair may be a different texture or colour at first — this often normalises with time.
• Care for your scalp while hair is sparse — use a gentle shampoo, moisturise the scalp, and protect it from the sun.

Sexual health and intimacy

This is a topic patients are often reluctant to raise, and one we want to make space for. Cancer treatment can affect sexual function, desire, and confidence in many ways:

• Reduced desire from fatigue, anxiety, hormonal changes, or medication.
• Vaginal dryness from chemotherapy or hormone therapy — easily managed with moisturisers and lubricants (water-based ones are safe to use).
• Erectile difficulties from some treatments, particularly hormone therapy for prostate cancer — there are effective treatments.
• Body image changes — hair loss, surgical scars, weight changes, the presence of a port — can affect how you feel about intimacy.
• Fertility — some treatments affect fertility. If you are of reproductive age and may want children in the future, ask about fertility preservation before treatment begins.

None of these are off-limits topics. We can talk about them in clinic, or refer you to a colleague (gynaecologist, urologist, fertility specialist, counsellor) if specialist help is needed.

Mental health

Anxiety, low mood, sleep difficulty, and irritability are extremely common during cancer treatment. They do not mean you are weak, or that you are failing to "stay positive". A serious illness is a serious psychological event.

• Talk about it — with your family, with us, or with a counsellor. The act of naming what you are feeling helps.
• Sleep matters. Disrupted sleep makes everything harder. Tell us if sleep is poor — there are safe options to help.
• Movement helps. Even short walks improve mood.
• Faith and community are powerful supports for many patients — lean on them if they help you.
• Medication is appropriate when anxiety or depression are significantly affecting your life. There are safe options that don't interact with cancer treatment.
• Professional counselling can be transformative. We can refer you.

When to call us — the short list

Pick up the phone or message us on WhatsApp if you have:

• Fever 38°C (100.4°F) or above — same hour, do not wait.
• Uncontrolled vomiting or diarrhoea (more than 24 hours).
• Any bleeding that does not stop — gums, nose, urine, stool.
• Severe breathlessness, chest pain, or palpitations.
• New severe headache, confusion, seizures, fainting.
• Redness, swelling, or pain around your IV port or central line.
• A new severe pain that you cannot control with your usual medicines.
• Any side effect that is interfering with eating, drinking, sleeping or daily life.