--- title: "Sickle cell disease: Symptoms & Treatment | HealthAnswers" description: "Sickle cell disease — painful crises, anaemia, infection risk, newborn screening, and NHS specialist care for children and adults." url: https://healthanswers.co.uk/conditions/sickle-cell-disease/ robots: noindex --- # Sickle cell disease: Symptoms & Treatment | HealthAnswers Health A–Z Sickle cell disease — painful crises, anaemia, infection risk, newborn screening, and NHS specialist care for children and adults. Written by HealthAnswers editorial team Medically reviewed by [HealthAnswers UK doctor review panel](https://healthanswers.co.uk/our-doctors/) Reviewed 3 July 2026 ## Quick answer What is sickle cell disease? Sickle cell disease (SCD) is an inherited blood disorder where red blood cells become sickle-shaped — causing anaemia, painful crises, and organ damage. Most common in people of African and Caribbean heritage. Newborn blood spot screening in England identifies babies early — penicillin and vaccinations prevent serious infection. Painful crises need urgent hospital treatment with strong pain relief and fluids. Hydroxycarbamide reduces crisis frequency. See a GP or haematology team for fever over 38°C in SCD — medical emergency due to sepsis risk. General UK health information, not a diagnosis. In an emergency call 999 ; for urgent advice use [NHS 111](https://111.nhs.uk/) (GP out-of-hours in Northern Ireland). On this page 6 sections ## Key facts about sickle cell disease - About 15,000 people in the UK have sickle cell disease — one of the commonest serious genetic conditions. - Sickle cell trait (carrier) is different from disease — usually no symptoms but important for genetic counselling. - Painful vaso-occlusive crisis — severe bone and joint pain — main cause of hospital admission. - Fever in sickle cell patient is emergency — overwhelming sepsis risk — attend A&E immediately. - Hydroxycarbamide, transfusions, and stem cell transplant are main disease-modifying treatments. ## Sickle cell disease — inherited haemoglobinopathy **Sickle cell disease (SCD)** results from **inheritance of HbS** — **polymerises under deoxygenation** → **rigid sickled erythrocytes** → **vaso-occlusion and haemolysis**. **~15,000 UK patients** — **predominantly Black British communities** **Newborn screening** — **early penicillin saves lives** ## Genetics | Genotype | Severity | | --- | --- | | HbSS | Most severe — sickle cell anaemia | | HbSC | Moderate | | HbS beta-thal | Variable | | HbAS (trait) | Carrier — usually asymptomatic | ## Pathophysiology **Vaso-occlusion:** - Bone pain crises - Dactylitis (hand-foot) — infants - Splenic sequestration — children - [Stroke](https://healthanswers.co.uk/conditions/stroke/) — children — transcranial Doppler screening **Chronic haemolysis:** - Anaemia — Hb 6–9 typical - [Jaundice](https://healthanswers.co.uk/symptoms/jaundice/) - [Gallstones](https://healthanswers.co.uk/conditions/gallstones/) - Aplastic crisis — parvovirus B19 ## Acute emergencies **[Fever](https://healthanswers.co.uk/symptoms/high-temperature/) ≥38°C** — **A&E same hour** — **overwhelming pneumococcal sepsis** **Acute chest syndrome:** - [Chest pain](https://healthanswers.co.uk/symptoms/chest-pain/) + fever + infiltrate on X-ray - Exchange transfusion may be needed **Stroke** — **sudden weakness, speech change** **Priapism >2 hours** **Splenic sequestration** — ** sudden splenomegaly, collapse** ## Long-term care **Specialist centre annual review:** - Hydroxycarbamide — raises HbF, reduces crises - Transcranial Doppler — children - Renal, eye, hip monitoring - Folic acid daily **Vaccinations:** - Pneumococcal, meningococcal, [influenza](https://healthanswers.co.uk/conditions/flu/), COVID **Pain management:** - Individualised crisis plan - Don’t undertreat — opioid stigma harms ## Pregnancy **High-risk** — **joint clinic** **Exchange transfusion programmes** — **selected centres** SCD patient with **fever** — **never “wait until morning”** — **[sepsis](https://healthanswers.co.uk/conditions/sepsis/) kills in hours**. ## ! When to see a GP about sickle cell disease Known SCD — phone haematology or attend A&E immediately for fever 38°C or above, sudden severe chest pain (acute chest syndrome), severe headache, weakness on one side, priapism over 2 hours, or sudden worsening anaemia. GP manages routine care with specialist centre — annual reviews, vaccinations, folic acid. Pregnancy needs joint obstetric-haematology care. ## Common questions about sickle cell disease What is sickle cell disease? Inherited condition — two abnormal haemoglobin S genes (homozygous HbSS commonest) or combinations with other haemoglobin variants. Red cells sickle under low oxygen — block small vessels — pain and organ ischaemia. Chronic haemolytic anaemia — fatigue, jaundice, gallstones. What is a sickle cell crisis? Vaso-occlusive crisis — sudden severe pain in bones, back, chest, abdomen — triggered by cold, dehydration, infection, stress. Treat with opioids, hydration, oxygen if hypoxic. Acute chest syndrome — chest pain, fever, hypoxia — leading cause of death — emergency admission. How is sickle cell disease treated? Penicillin prophylaxis in children until at least 5. Full vaccination schedule including pneumococcal. Hydroxycarbamide reduces crises — most take from childhood. Blood transfusions for stroke prevention or severe anaemia. Crizanlizumab or voxelotor in selected cases. Curative option — stem cell transplant — selected children with matched donor. What is sickle cell trait? Carrier state — one HbS gene — usually healthy. Can have blood in urine after extreme exertion (rhabdomyolysis risk with severe dehydration — military, elite sport caution). Both partners should know trait status before pregnancy — genetic counselling. Can people with sickle cell disease live normal lives? Yes with specialist support — school/work adjustments, avoid extreme cold and dehydration, recognise early infection. Chronic pain and fatigue affect quality of life — psychology and pain teams help. Life expectancy improving — median now 50s–60s in high-income countries with good care. ## Sources - [NHS — Sickle cell disease](https://www.nhs.uk/conditions/sickle-cell-disease/) - [Sickle Cell Society](https://www.sicklecellsociety.org/) - [NICE — Sickle cell acute painful episode](https://www.nice.org.uk/guidance/cg143) ## How we reviewed this page Medically reviewed by the [HealthAnswers UK doctor review panel](https://healthanswers.co.uk/our-doctors/) First published 14 June 2026 Medically reviewed 3 July 2026 Next review due 3 July 2029 or sooner if NHS or NICE guidance changes Written by HealthAnswers editorial team. Published by HealthAnswers (Elite Digital AI Solutions Ltd). 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