Hematologist
CION Cancer Clinics
Fever with low counts: the emergency you should never wait out | CION Cancer Clinics
Go to the nearest emergency department now, or call 108. A temperature of 38°C or higher in someone on blood cancer treatment can mean a serious infection while the white cell count is too low to fight it. Antibiotics work best when they start early, so do not wait for morning. This page explains the warning signs, what to carry, and what happens next. At CION Cancer Clinics, our haematology team supports patients and families through treatment, cost questions and life at home.
BP
Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
17+specialists on panel
15,000+patients treated
35+centres across Telangana & AP
4.8★ / 800+Google rating
On this page
- Why is a fever with low counts treated as an emergency?
- What other signs should send you to hospital?
- What should you do from the first reading to the hospital door?
- What do families get wrong about fever during treatment?
- What do the words used in the emergency department mean?
- What happens in hospital, and what can this page not tell you?
- Common questions about fever during blood cancer treatment
!
If there is a fever right now
If you are on treatment for a blood cancer and your temperature is 38 degrees Celsius or higher, or you are shivering, confused or feel suddenly very unwell, go to the nearest emergency department now. If you cannot get there safely, call 108. Say the words "blood cancer, on chemotherapy, low counts" at the front desk. Do not wait for the morning, do not wait for a second reading, and do not take a fever tablet first and see what happens.
The short answer
Why is a fever with low counts treated as an emergency?
Because a fever may be the only sign of a serious infection when your white cell count is low. Infection can spread through the blood within hours, and treatment works far better when it starts early.
What low counts take away
Neutrophils are the white cells that fight bacteria first. Chemotherapy for leukaemia, lymphoma and myeloma, and the disease itself, can push them very low. With few neutrophils, your body cannot make the usual warning signs. There may be no pus, no swelling and no cough. A raised temperature is often all you get.
Why speed matters more than the cause
Doctors do not wait to find out which germ is responsible. They take blood samples and start antibiotics through a drip straight away. The test results guide changes later. This is why the time between the first reading at home and the first antibiotic matters so much.
Who this applies to
Anyone who has had chemotherapy in recent weeks, anyone with acute leukaemia or a bone marrow problem, and anyone whose team has told them their counts are low. It also applies if you feel very unwell with a normal temperature, because some people do not run a fever at all.
Steroids and paracetamol can hide a fever. Feeling shaky, cold or unwell counts too.Not sure whether this applies to you?
Ask an oncologistNot only the thermometer
What other signs should send you to hospital?
Any one of these, in someone on blood cancer treatment, is a reason to go the same day, with or without a fever.
Shivering or rigors
Shaking you cannot stop, teeth chattering, or feeling icy cold while the skin feels hot. Shivering often comes before the temperature rises, and it is a warning in its own right.
Changes in how the person seems
New confusion, unusual sleepiness, slurred speech or not making sense. Families usually notice this before the patient does.
Also watch for
- Fast breathing or breathlessness
- Passing much less urine
- Cold, pale or blotchy hands and feet
A line or wound that looks wrong
Redness, pain, swelling or leaking around a central line, a PICC, or a recent biopsy site. Fever or shivering during a line flush is also a warning.
Symptoms that point to a site
A new cough, burning when passing urine, loose motions, a sore mouth that stops you swallowing, or pain in the back passage. Each can be the place an infection started.
Step by step
What should you do from the first reading to the hospital door?
-
Check once, properly
Use a digital thermometer under the tongue or in the armpit. If it reads 38 degrees Celsius or more, or the person looks unwell, you already have your answer. You do not need a second reading to decide.
-
Call your treating team on the way, not instead
If your haematology unit gave you an emergency number, ring it as you leave. Do not sit at home waiting for a call back.
-
Pick up the papers
Take the latest discharge summary, the most recent blood report and the list of current medicines. A photo of each on your phone is enough if you are in a hurry.
-
Go to the nearest emergency department
The nearest one with a doctor on duty, not the hospital where treatment was given if that is hours away. In a Telangana or Andhra Pradesh district, the district hospital emergency is a proper place to start. Call 108 if nobody can drive.
-
Say the key words at the desk
"On chemotherapy for blood cancer, fever, may have low counts." This tells the triage nurse to see you quickly rather than in queue order.
Leave a number, we will call you
One field. No form to fill in, and no charge for the call.
Commonly believed
What do families get wrong about fever during treatment?
"Give a paracetamol and see if it settles."
A tablet can bring the number down while the infection carries on. It hides the one sign the doctors rely on and loses precious time. Ask the emergency team before giving anything.
"It is only a small fever, so it can wait till morning."
With low counts, the size of the fever does not tell you how serious the infection is. People can become very ill overnight. The rule is the same at midnight as at noon.
"The nearby hospital will not know how to handle it."
Any emergency doctor can start the first antibiotics and fluids. That first hour matters more than which hospital gives it. Transfer to your treating centre can be arranged once you are stable.
"His counts were fine last week, so it cannot be that."
Counts fall quickly after chemotherapy, often to their lowest one to two weeks after a cycle. Last week's normal report says little about today.
What you will hear
What do the words used in the emergency department mean?
- Neutropenic sepsis
- A serious infection in someone with a very low neutrophil count. It is the reason for the urgency, and it is treated first and explained later.
- ANC
- Absolute neutrophil count. The number of infection-fighting white cells in your blood. Reference ranges differ between laboratories.
- Blood cultures
- Blood taken into special bottles to grow any germs. Results take a few days, so antibiotics start before they come back.
- Broad-spectrum antibiotics
- Antibiotics that cover many types of bacteria at once, given through a drip while the cause is unknown.
- Isolation or barrier nursing
- A separate room and handwashing rules to protect you from other people's germs, not to protect others from you.
After you arrive
What happens in hospital, and what can this page not tell you?
Expect blood tests, blood cultures, a drip and antibiotics very early, often before the full count is back. A chest X-ray, urine test and swabs may follow. Most people are admitted, at least until the fever settles and the team is confident the infection is under control.
What your team decides, not you
Whether you can later go home on tablets, how long antibiotics last, and whether your next cycle is delayed are decisions for your treating haematologist. Do not stop or change any cancer medicine because of the fever unless your own team tells you to.
What this page cannot tell you
It cannot tell you whether your fever is from an infection, a transfusion, the disease or a drug. It cannot tell you your count today. It can only tell you that the safe move is the same every time: go now, and let the emergency team find out.
If you are unsure whether you are at risk, treat it as though you are. Nobody at the emergency desk will think you came in for nothing.Questions we are asked
Common questions about fever during blood cancer treatment
What temperature counts as a fever on chemotherapy?
Most haematology teams use 38 degrees Celsius or higher as the trigger to go to hospital. But a lower reading with shivering, confusion or feeling very unwell counts too. Your own team may have given you a different number, and if so, follow theirs. When in doubt, go.
Should I check the count before going to hospital?
No. Getting a blood test at a local lab first only delays treatment. The emergency department will check the count and start antibiotics at the same time. A normal count does not change the need to be seen, because counts can fall within a day.
Can I just take the antibiotic tablets I have at home?
Only if your treating team has given you a clear written plan that says so. Otherwise do not start any antibiotic on your own. Tablets at home are not a replacement for being seen, and starting them can make it harder for doctors to find the germ.
My father has no fever but is shivering and confused. What do I do?
Take him to the nearest emergency department now, or call 108. Serious infection can show up without a fever, especially in older people or anyone on steroids. Confusion and shivering in a person on blood cancer treatment are emergency signs by themselves.
Is it safe to go to a hospital that did not give the chemotherapy?
Yes. The first steps are the same everywhere: blood tests, cultures and antibiotics through a drip. Carry the discharge summary and latest report, and ask the emergency doctor to speak to your treating haematologist. Moving you can happen once you are stable.
Will we have to stay in hospital?
Usually yes, at least for a short time. Some people at lower risk are later allowed home on tablets with close follow-up, but that is a decision the team makes after seeing you and your results. Pack for a stay of a few days to be safe.
Can this happen more than once?
Yes. Each cycle brings a new period of low counts, and some people have more than one infection during treatment. Your team may add growth factor injections or preventive medicines. Keep the thermometer and the hospital bag ready for the whole course, not only the first cycle.
How can CION help if this happens?
In an emergency, go to the nearest emergency department first. Once you are safe, call the helpline. CION's haematology team can review the reports, speak with the treating doctors and help plan the next steps of care. The helpline does not replace an emergency department.
Your Haematologist
Meet CION's haematologist. One specialist for your blood report and your plan.
Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
Want a specific doctor for your case? Mention them when booking.
Book Free ConsultationBook an appointment with our specialist
Share your name and number — we'll call you back within 30 minutes to schedule your consultation.
Patient stories
Hear it from people we have treated
Every story is a video, in the patient's own words. Nothing here is a written testimonial.
Where to find us
Our centres in and around Hyderabad
Addressed by landmark, because that is how this city navigates. A haematology consultation can be booked at any of these centres through one helpline, and your team will tell you where each test or treatment takes place.
Warangal
Vizag
Sources
- NICE — Neutropenic sepsis: prevention and management in people with cancer (CG151)
- National Cancer Institute — Infection during cancer treatment
- NHS — Sepsis
- Cancer Research UK — Side effects of chemotherapy
- National Health Mission — National Health Mission
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
The One-Hour Antibiotic RuleWhy the first antibiotic cannot waitChecking Temperature Correctly at HomeHow to get a reading you can trustWhich Days After Treatment Are RiskiestWhen counts are usually at their lowestLine Infection: Recognising It EarlyIf you have a central line or PICCCounts, Fever and Infection in HaematologyThe full guide to counts and infection
Talk to us
Back home after a fever admission?
Share the discharge summary and latest report. CION's haematology team will go through them with you and help plan the next cycle. One helpline serves every CION centre.