---
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.

## Who is this page for?

This page is for people in the UK who want a plain-English overview of Sickle cell disease, including when to seek help and what NHS care usually involves. It explains general information, not what is wrong with you personally.

## Who should skip this page?

Skip this page if you need a diagnosis, a prescription, or emergency care. It cannot replace a GP, pharmacist, NHS 111 or 999. If you are in immediate danger, call 999; for urgent advice that is not life-threatening, call 111 in England, Scotland or Wales, or use your GP out-of-hours service 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 — children — transcranial Doppler screening

**Chronic haemolysis:**

- Anaemia — Hb 6–9 typical

- Jaundice

- Gallstones

- Aplastic crisis — parvovirus B19

## Acute emergencies

**Fever ≥38°C** — **A&E same hour** — **overwhelming pneumococcal sepsis**

**Acute chest syndrome:**

- 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, 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 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)