Overview
Sickle cell disease is a group of inherited blood disorders that affect hemoglobin, the protein in red blood cells that carries oxygen. In this condition, some red blood cells become stiff and shaped like a crescent or sickle. These cells can break down sooner than normal and can also block small blood vessels, leading to pain and other serious health problems.
Key Symptoms
Symptoms can begin in infancy or early childhood, though they vary from person to person. Common problems include anemia, tiredness, jaundice, swelling of the hands and feet, repeated pain episodes, and frequent infections. Some people may also develop breathing problems, vision changes, delayed growth, or signs of organ complications.
Causes and Risk Factors
Sickle cell disease is caused by inherited changes in the gene that makes hemoglobin. A person usually develops the disease when they inherit a sickle cell gene from both parents. The main risk factor is family history, especially if both parents carry a sickle cell gene or another hemoglobin-related gene.
Who Is Affected
Sickle cell disease can affect people worldwide. It is more common in people whose families come from parts of Africa, the Mediterranean, the Middle East, India, and some regions of the Americas and Caribbean. Both children and adults can be affected, and many countries now screen newborns for it.
Prevention
Sickle cell disease itself cannot be prevented after a child inherits the condition. However, genetic counseling and carrier testing can help people understand the chance of passing it on to children. Early newborn screening and preventive healthcare can help lower the risk of severe complications.
Diagnosis and Tests
Diagnosis is usually made with blood tests that look at hemoglobin types. In some places, newborn screening helps find the condition very early. Doctors may also use other tests over time to monitor anemia, organ health, stroke risk, infection risk, and other complications.
Treatment Categories
Treatment focuses on preventing complications, reducing pain, and protecting organs. Care may include vaccines, infection prevention, pain management, blood transfusion support, medicines that reduce complications, and regular specialist follow-up. Some people may be evaluated for advanced treatments such as stem cell transplantation or newer therapies, depending on their situation and local availability.
Living With It
Sickle cell disease is a lifelong condition, but many people can live into adulthood and manage it with regular care. Keeping scheduled appointments, knowing personal warning signs, and having a plan for pain episodes and fever can help. Emotional support, school or work accommodations, and social support can also be important.
Diet and Lifestyle
Daily habits can support overall health, although they do not replace medical treatment. Staying well hydrated, avoiding extreme temperatures when possible, getting enough rest, and keeping up with vaccinations may help reduce problems for some people. A healthcare professional may also advise on activity, travel, and nutrition based on age, symptoms, and complications.
When to Seek Medical Care
Seek medical care promptly for fever, worsening pain, shortness of breath, unusual weakness, severe tiredness, swelling, yellowing that is getting worse, or signs of dehydration. New headaches, problems with vision, chest symptoms, or reduced urination also need medical attention. Children with sickle cell disease should be assessed quickly when they seem unwell because infections can become serious fast.
When It May Be an Emergency
Emergency care is needed for chest pain, trouble breathing, seizures, fainting, severe headache, confusion, weakness on one side, trouble speaking, or a painful erection that does not go away. Emergency care is also needed for very high fever, extreme drowsiness, sudden severe abdominal swelling, or symptoms of stroke. These problems can become life-threatening and should not be delayed.
Questions to Ask a Healthcare Professional
You may want to ask which type of sickle cell disease is present, what complications to watch for, and how often monitoring is needed. Other helpful questions include what vaccines and preventive steps are recommended, how to handle pain episodes, and when emergency care is needed. Families may also ask about genetic counseling, pregnancy planning, school support, and long-term treatment options.