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Sickle cell crisis: the signs that mean go to hospital now | CION Cancer Clinics
Go to the nearest emergency department now, or call 108, if a sickle cell crisis brings any fever, chest pain, breathing trouble, stroke signs, a pale child with a swollen belly, a lasting erection, or pain your home plan cannot control. Do not wait for morning. This page explains each warning sign, what the hospital will do, and what to carry with you. At CION Cancer Clinics, our haematology team supports patients and families through treatment, cost questions and life at home.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- When should a sickle cell crisis go to hospital?
- Which crisis signs mean hospital today?
- What happens when you reach the hospital?
- Is it safe to manage a crisis at home, and who should not try?
- What do families believe about crises that delays care?
- What should you take and tell the emergency team?
- Common questions about sickle cell crises
Do this first
When should a sickle cell crisis go to hospital?
Go to the nearest emergency department now, or call 108, if the pain is not settling with the home plan your haematology team gave you, or if there is any fever, chest pain, trouble breathing, weakness on one side, a swollen belly in a child, or an erection that will not go down. Do not wait for the morning to see whether it passes.
Why sickle cell disease changes the rules
In sickle cell disease the red blood cells can bend into a stiff, curved shape and block small blood vessels. That causes the pain of a crisis. The same blockage can happen in the lungs, brain, spleen or penis, and those crises can turn serious quickly. A fever matters more too, because the spleen often does not fight infection well.
Most crises are pain, and many settle at home
Many people manage milder pain at home with warmth, fluids, rest and the pain relief agreed with their team. The mistake is to keep trying at home once a warning sign appears, or once the usual plan stops working.
If you are unsure whether it is serious enough, treat it as serious. Emergency teams would rather see you early than late.
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Call 108 or go to emergency now
Chest pain, fast or difficult breathing, a fit, sudden weakness or numbness on one side, slurred speech, fainting, lips or tongue turning blue, or a child who is suddenly very pale, floppy or has a hard, swollen belly. These are not signs to watch overnight. Tell the ambulance crew and the emergency doctor straight away that the person has sickle cell disease.
Not sure whether this applies to you?
Ask an oncologistSigns to know
Which crisis signs mean hospital today?
Each of these points to a different kind of crisis. Any one of them is enough to go.
Pain that the home plan cannot control
Pain in the back, chest, arms, legs or belly that keeps building, or comes back soon after each dose of the pain relief you were told to use. Severe pain needs relief given in hospital.
Any fever
Even a mild temperature can mean a serious infection, especially in children. Do not wait to see whether it comes down on its own. The team will want blood tests and often antibiotics quickly.
Chest pain, cough or breathlessness
These can be the start of acute chest syndrome, where blocked vessels and infection affect the lungs. It can worsen fast, sometimes a day or two into an ordinary pain crisis.
Stroke signs
A drooping face, a weak arm or leg, slurred or confused speech, a sudden severe headache or a fit. Call 108 rather than driving yourself.
A child who is pale with a swelling belly
The spleen can suddenly trap a large amount of blood. The child looks pale, tired and weak, and the left side of the belly swells. This needs emergency care.
An erection that will not go down
A painful erection that lasts, called priapism, can damage the penis if it is not treated in time. It is common in sickle cell disease and nothing to be embarrassed about.
At the emergency department
What happens when you reach the hospital?
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Say "sickle cell crisis" at the desk
Pain is easy to under-rate when the person looks calm. Say clearly that this is a sickle cell crisis, describe how bad the pain is, and mention any fever, breathing trouble or new weakness.
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Pain relief comes early
Guidance for emergency teams asks for pain relief to be given soon after arrival, before all the tests are back. If you carry a written pain plan from your haematologist, hand it over now.
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Checks and blood tests
Temperature, breathing, oxygen level and a full blood count, which shows the haemoglobin (the part of blood that carries oxygen). A chest X-ray is often done if there is any chest symptom or fever.
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Fluids, oxygen and antibiotics if needed
A drip helps if you cannot drink enough. Oxygen is given if the level is low. Antibiotics are started if infection is possible.
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Admission or a plan for home
Some people go home once the pain is controlled. Others stay, and a few need a blood transfusion. Before leaving, ask what should bring you straight back.
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Being straight with you
Is it safe to manage a crisis at home, and who should not try?
Home care is safe only for a mild pain crisis with no warning signs, in someone who already has a plan written by their haematology team. Keep warm, drink plenty of water, rest, and use only the pain relief in that plan. If the pain is still climbing, or a warning sign appears, the home plan has done its job and it is time to go.
Who should go in sooner
Babies and young children, anyone pregnant, anyone who has had acute chest syndrome or a stroke before, and anyone whose spleen has been removed. The same applies if you live in a district far from an emergency department. Leave early rather than at night.
What this page cannot tell you
It cannot judge how serious one person's crisis is. It cannot replace the pain plan your own team has written, and it does not give any medicine doses. Never start, stop or change a medicine on your own because of something read here. If you do not yet have a written crisis plan, ask your haematologist for one at the next visit.
Keep a photo of the latest blood report and the pain plan on your phone, so it travels with you.Commonly believed
What do families believe about crises that delays care?
"He has had these pains since childhood. This one will pass too."
Most crises do pass, which is why a dangerous one is easy to miss. A crisis that feels different, lasts longer, or comes with fever or breathing trouble needs to be seen.
"Hospitals think we are only asking for strong painkillers."
Sickle cell pain is real and can be among the worst pain a person feels. Asking for relief is asking for proper treatment. A written plan from your haematologist helps the emergency team act quickly.
"A small fever just needs rest and home remedies."
In sickle cell disease the body fights some infections poorly. A fever can be the first sign of a blood infection, so it needs a doctor the same day, not a wait-and-see approach.
"We should wait until morning to reach the big hospital in the city."
If a warning sign is present, go to the nearest emergency department now. It can start treatment and arrange transfer if needed. Distance is a reason to leave earlier, never a reason to wait.
Before you leave home
What should you take and tell the emergency team?
Take or tell
Why it helps
The diagnosis: sickle cell disease, and which type if known
It changes how quickly pain, fever and chest signs are treated
Your written pain plan or emergency card
It shows what has worked before and what to avoid
The latest blood report, including the usual haemoglobin
A drop from your normal level is more telling than one number alone
Every medicine taken, and when the last dose was
The team avoids doubling up and checks for interactions
Past transfusions, a removed spleen, or earlier chest crises
These raise the level of care the team plans for
Questions we are asked
Common questions about sickle cell crises
How do I know if a sickle cell crisis is an emergency?
It is an emergency if there is any fever, chest pain, breathing trouble, stroke signs, a pale child with a swelling belly, a lasting erection, or pain that the home plan cannot control. If you are unsure, go to the nearest emergency department or call 108. Waiting to be certain is riskier than going early.
Should I call 108 or take an auto to the hospital?
Call 108 for chest pain, breathing trouble, a fit, sudden weakness, confusion or fainting. The crew can give oxygen on the way. For severe pain alone, going quickly by car or auto is reasonable if someone else can drive and the hospital is close. Never let the person in pain drive.
My child has sickle cell disease and a fever. Can it wait?
No. Children with sickle cell disease can become very unwell from infection quickly, because the spleen often does not protect them well. Take the child to an emergency department the same day, even if the fever seems mild and the child is still playing. Mention any preventive antibiotic the child takes.
What is anaemia, and why do they check it in a crisis?
Anaemia means a low haemoglobin, so the blood carries less oxygen. Most people with sickle cell disease live with some anaemia. In a crisis the team checks whether it has dropped suddenly below your usual level. Reference ranges differ between laboratories, and one result is always read alongside your symptoms and repeat tests.
Will they give a blood transfusion every time?
No. Most pain crises are treated with pain relief, fluids and rest, without a transfusion. A transfusion is considered when the haemoglobin falls sharply, or in crises affecting the lungs, brain or spleen. The decision belongs to the treating team, who weigh the benefit against the risks of repeated transfusion.
Can dehydration or cold weather start a crisis?
They can make one more likely. Not drinking enough in the Hyderabad summer, getting chilled, infections, heavy exertion and stress are common triggers. Avoiding them lowers the chance but cannot prevent every crisis, so knowing when to go still matters.
Is it safe to give the usual painkiller before leaving home?
Use only what is written in the home plan from your haematology team, and do not add anything new on your own. Tell the emergency doctor exactly what was taken and when. If there is no written plan yet, go in and ask for one to be made before you are discharged.
Can CION help with sickle cell care after the emergency?
Emergency care should happen at the nearest emergency department first. Afterwards, CION's haematology team can review the reports, discuss the case and help plan follow-up, including a written crisis plan and what to ask about longer-term treatment. Call the helpline with the discharge summary in hand.
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Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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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.
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Sources
- NHS — Sickle cell disease
- National Heart, Lung, and Blood Institute — Sickle Cell Disease
- American Society of Hematology — Sickle Cell Disease
- National Health Mission — National Sickle Cell Anaemia Elimination 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
Acute Chest Syndrome Warning SignsThe lung crisis that can follow a pain crisisVery Low Haemoglobin: When It Is an EmergencyWhen a sudden drop needs urgent transfusionFever With a Removed SpleenWhy fever is urgent when the spleen does not workEmergency Card for Blood Disorder PatientsA card to carry so the emergency team knows at onceBenign Haematology EmergenciesEvery blood disorder emergency in one place
Talk to us
Need help planning sickle cell care after a crisis?
In an emergency, go to the nearest emergency department or call 108 first. Afterwards, share the discharge summary with our helpline and the haematology team will help plan what comes next.