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Chemotherapy emergencies

Who to Call During Chemotherapy — Day, Night, and When It Is an Emergency

The number on your CION discharge card is your first call for most worrying symptoms, at any hour. Some symptoms mean skipping the call entirely and going straight to the emergency department.

Medically reviewed by Dr. N. Kiranmayee, Medical Oncologist · Last reviewed September 2026

  • Fever means emergency, not helpline — Any raised temperature during chemotherapy goes to the emergency department immediately — not a helpline call.
  • Your helpline covers everything else — Nausea, new pain, mouth sores, unexpected changes — the helpline is there for all of it, around the clock.
  • Night is not a reason to wait — After-hours cover exists specifically because symptoms do not keep clinic hours.
  • No answer? Go in if it feels serious — If you cannot reach anyone and your symptoms feel severe, go to the emergency department without waiting for a callback.
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The helpline number on your CION discharge card is your first call for new or worsening symptoms, day or night. Call it for nausea, pain, mouth sores, or anything that worries you. Go straight to the emergency department — without calling first — for fever, difficulty breathing, heavy bleeding, or any symptom that feels severe and sudden.

If a symptom below applies to you, do not wait for a callback. Call 1800-202-8726 or go to your nearest emergency department.

If you are worried right now, call

Our helpline is answered by clinical staff. If a symptom is on the list above, do not wait for a callback — call, or go to your nearest emergency department.

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17+ senior cancer specialists. One panel for your case.

Trained at AIIMS, Tata Memorial, and leading international centres. Combined 150+ years of experience. Every complex case is reviewed by 3+ of them — together.

Dr. Naresh Gundu
Medical Oncologist

Dr. Naresh Gundu

MBBS, DNB (Internal Medicine), DM (Medical Oncology)

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Dr. C. Raghavendra Reddy
Medical Oncologist

Dr. C. Raghavendra Reddy

MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)

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Dr. Bharati Devi Gorantla
Medical Oncologist

Dr. Bharati Devi Gorantla

MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)

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Dr. Owais Mohammed
Medical Oncologist

Dr. Owais Mohammed

MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)

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Dr. T. Raghavender Reddy
Medical Oncologist

Dr. T. Raghavender Reddy

MBBS, DM (Medical Oncology), MD (Radiation Oncology)

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Dr. N. Kiranmayee
Medical Oncologist

Dr. N. Kiranmayee

MBBS, DM (Medical Oncology), MD (Internal Medicine)

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Dr. Muralidhar Muddusetty
Surgical Oncologist

Dr. Muralidhar Muddusetty

MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)

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Dr. Raghavendra Naik
Surgical Oncologist

Dr. Raghavendra Naik

MBBS, MS (General Surgery), M.Ch (Surgical Oncology)

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Dr. Mohammed  Imaduddin
Surgical Oncologist

Dr. Mohammed Imaduddin

M.B.B.S, MS (General Surgery), M.Ch (Surgical Oncology)

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Dr. Vinay Mamidala
Surgical Oncologist

Dr. Vinay Mamidala

MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)

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Dr. Paila Gowri Naidu
Surgical Oncologist

Dr. Paila Gowri Naidu

MBBS, MS (General Surgery), M.Ch (Surgical Oncology), FMAS

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Dr. Venkata Sushma P
Radiation Oncologist

Dr. Venkata Sushma P

MBBS, MD (Radiation Oncology)

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Dr. Kirti Ranjan Mohanty
Radiation Oncologist

Dr. Kirti Ranjan Mohanty

MBBS, MD (Radiation Oncology)

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Dr. Gangadhar Vajrala
Radiation Oncologist

Dr. Gangadhar Vajrala

MBBS, MD (Radiation Oncology), MPH

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Dr. Basudev Pokhrel
Hematologist

Dr. Basudev Pokhrel

MBBS, M.D (Immunohematology & Blood Transfusion)

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Dr. Mohammed Imran
Interventional Radiologist

Dr. Mohammed Imran

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Dr. Vajja Sandeep Kumar
Surgical Oncologist

Dr. Vajja Sandeep Kumar

MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology

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Dr. Sridhar Kamani
Surgical Oncologist

Dr. Sridhar Kamani

MBBS, MS (General Surgery), DrNB (Surgical Oncology)

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Not sure whether this counts as an emergency?

Call the helpline. It is always better to check than to wait.

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Which contact should you call for which symptom?

Symptom or situationWho to contactHow urgent
Fever, chills, or feeling hot and shiveryEmergency departmentRight away — day or night, no call first
Difficulty breathing, chest pain, or severe reactionEmergency departmentRight away — do not wait
Heavy or uncontrolled bleedingEmergency departmentRight away
Nausea, vomiting, or diarrhoea that is worseningOncology helplineSame day — do not wait for your next appointment
New pain, swelling, or a wound that looks infectedOncology helplineSame day, or after hours if it feels urgent
Questions about medicines, meals, or your next visitClinic receptionDuring clinic hours
Typically startsSide effects often appear within the first few days after an infusion but can develop at any point — report new symptoms any time, not just on clinic daysAny time during treatment

What do you do if nobody answers?

If you call the helpline and reach voicemail, leave your name, your symptom, and your contact number — then make a decision based on what you are feeling.

For anything that feels severe — fever, breathing problems, bleeding, or pain you cannot describe as mild — do not wait for a return call. Go to the nearest emergency department and tell the staff you are on chemotherapy. Give them the name of your treatment centre and your medicines if you have them written down.

For milder concerns, keep trying the helpline and call the clinic directly as soon as it opens. Most worries can wait an hour; very few can wait a full day.

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Common questions

Frequently asked questions

Is the oncology helpline available at night and on weekends?

Yes — after-hours cover exists because chemotherapy symptoms do not keep office hours. The number on your CION discharge card is available around the clock. If you are unsure whether your symptom warrants a midnight call, it does. The team would rather hear from you at 2am than have you wait until morning with something that is worsening.

What do I say when I call the helpline?

Start with your name and the fact that you are on chemotherapy at CION. Then give the date of your last infusion and describe your main symptom in plain words — what it is, how bad it feels, and when it started. If you have a fever, say so first. You do not need the medical name for what you are experiencing. The person who answers will guide you from there.

My family member on chemotherapy has a fever. Should we call first or go straight to emergency?

Go straight to the emergency department. Fever during chemotherapy is treated as a medical emergency, and calling first only adds delay with no benefit. Tell the emergency team that the person is on chemotherapy, give them the name of the treatment centre, and share the medicines if you have them listed. Time matters — do not wait to see if the fever settles on its own.

What if I cannot reach anyone and my symptoms feel serious?

Go to the nearest emergency department without waiting for a callback. When you arrive, tell the staff you are a CION patient on chemotherapy and give them the names of your medicines and the date of your last infusion. They can contact CION for your treatment history if they need it. Keeping a written list of your medicines with you at all times makes this faster.

Full index

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Before You Start: Tests, Ports & Fertility42
Blood Counts, Infection, Fever & Emergencies73

Anaemia & Low Haemoglobin

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Chemotherapy and Supportive Medicines by Name75

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HUB — Generic, Branded and Biosimilar Chemotherapy in India

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Chemotherapy at CION Cancer Clinics1
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Chemotherapy in Hyderabad: Cost, Centres & Access93

HUB — Choosing a Chemotherapy Centre and Safe Administration

Common Side Effects and How They Are Managed78
Food, Diet, Hydration & Household Safety6
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Understanding Chemotherapy, Myths & Trials97

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