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    Sickle Cell Disease in Children

    What is sickle cell disease in children?

    Sickle cell disease (SCD) is a blood disorder that a child is born with. It's passed down through a parent’s genes. Children with SCD make an abnormal type of hemoglobin. This is the protein in red blood cells that carries oxygen to all parts of the body.

    Healthy red blood cells with normal hemoglobin are round and move easily through blood vessels. When a child has SCD, the red blood cells are hard and sticky. They are shaped like the letter C (and like a farm tool called a sickle). These damaged red blood cells (sickle cells) clump together. They can’t move easily through the blood vessels. They get stuck in small blood vessels and block blood flow. This blockage can cause pain. It can also damage major organs.

    Sickle cells die sooner than healthy cells. Normally the spleen helps filter infections out of the blood. But sickle cells get stuck in this filter and die. Having fewer healthy red blood cells causes anemia. The sickle cells can also damage the spleen. Without a healthy spleen, children are more at risk for serious infections.

    There are several complex types of the sickle cell gene. Some don’t cause symptoms or severe problems, but others do. Talk with your child’s healthcare provider about the specific form of sickle cell your child has.

    Most children with SCD will start showing symptoms during the first year of life, often around 5 months.

    What causes sickle cell disease in a child?

    Sickle cell is present at birth. It is inherited when a child has two sickle cell genes, one from each parent.

    A child who has only one sickle cell gene is healthy. But they are a carrier of the disease. If two carriers have a child, there is a chance their child will have sickle cell disease.

    Once parents have had a child with sickle cell disease, there is a 1 in 4 chance that another child will be born with sickle cell disease. There is also a 1 in 2 chance that a child will be a carrier, like the parents.

    Which children are at risk for sickle cell disease?

    Having a family history of SCD increases a child’s risk for the disease. SCD mainly affects people whose families came from Africa and Hispanics whose families are from the Caribbean. But the gene has also been found in people whose families are from the Middle East, India, Latin America, and Mediterranean countries. It has also been found in American Indians.

    What are the symptoms of sickle cell disease in a child?

    Most children with SCD will start to have symptoms during the first year of life, often around 5 months. Each child’s symptoms may vary. They may be mild or severe. Symptoms can include:

    • Anemia. This is the most common symptom. Having fewer red blood cells causes anemia. Anemia can make a child pale and tired.

    • Yellowing of the skin, eyes, and mouth (jaundice). This is a common symptom. Sickle cells don't live as long as normal red blood cells. They die faster than the liver can filter them out. The yellow color is caused by a substance (bilirubin) that is released when the red blood cells die.

    • Pain crisis, or sickle crisis. When sickle cells move through small blood vessels, they can get stuck. This blocks blood flow and causes pain. This sudden pain can happen anywhere, but most often occurs in the chest, arms, and legs. Babies and young children may have painful finger and toe swelling. Blocked blood flow may also cause tissue death.

    • Acute chest syndrome. This is when sickle cells stick together and block oxygen flow in the tiny vessels in the lungs. This can be deadly. It often occurs suddenly, when the body is under stress from infection, fever, or fluid loss (dehydration). It looks like pneumonia and can include fever, pain, and a violent cough.

    • Splenic sequestration (pooling). The spleen becomes enlarged and painful when sickle cells get stuck and build up there. Fewer red blood cells are able to move. This can cause a sudden drop in hemoglobin. It can be deadly if not treated at once.

    The symptoms of SCD may look like other disorders or health problems. Always see your child's healthcare provider for a diagnosis.

    How is sickle cell disease diagnosed in a child?

    Most states check newborn babies for abnormal hemoglobin as part of routine newborn screening tests. State newborn screening includes tests for all newborns in the first few days of life. These tests identify serious, life-threatening diseases. 

    SCD may be found as part of newborn screening. Your family history, your child's medical history, and a physical exam are all included in the diagnosis. If the screening test shows SCD, a blood test called hemoglobin electrophoresis may be done. It can tell if your child is a carrier of sickle cell. It can also tell if your child has any of the diseases linked to the sickle cell gene. Other blood tests may also be done.

    How is sickle cell disease treated in a child?

    Treatment will depend on your child’s symptoms, age, and general health. It will also depend on how bad the condition is.

    Early diagnosis and preventing further problems is important in treating this disease. Your child's healthcare provider will refer you to a hematologist. This is an expert in blood disorders. Other specialists may also be involved in your child's care.

    Treatment may include:

    • Pain medicines. These are used for pain crises.

    • Drinking plenty of water daily (8 to 10 glasses). This helps prevent and treat pain crises. In some cases, IV (intravenous) fluids may be needed.  

    • Blood transfusions. This is when donated blood is given to your child through a vein in their arm. No blood is removed from your child. It's used to treat anemia, chronic pain, acute chest syndrome, and splenic sequestration, and to prevent stroke.

    • Red blood cell exchange. This is when some of the child's red blood cells are removed from their body and replaced with normal red blood cells from a donor. This can help reduce complications of sickle cell disease.

    • Vaccines and antibiotics. These are used to prevent infections.

    • Folic acid. This helps prevent severe anemia.

    • Regular eye exams. These are done to screen for an eye condition called retinopathy. Have your child’s eyes checked each year.

    • Transcranial ultrasound exams. These are done to screen those people with sickle cell who are at risk for stroke.

    • Stem cell transplant. Transplants can cure some children with SCD. Studies of this treatment are ongoing. Talk with your child’s healthcare provider. Transplants are only done at certain medical centers.

    • Hydroxyurea. This is a medicine that can reduce the number of sickle cells in the blood. It reduces complications, painful episodes (crises), and hospital stays.

    There is ongoing research with newer medicines available. Discuss these choices with your child's healthcare provider.

    What are possible complications of sickle cell disease in a child?

    Complications of SCD include:

    • Long-term anemia. This may lead to delayed healing and delayed growth and development.

    • Pain crisis, or sickle crisis. In severe cases, your child may need treatment in a hospital.

    • Acute chest syndrome. Over time, many episodes of acute chest syndrome can cause lasting (permanent) lung damage

    • Splenic sequestration (pooling). When red blood cells build up in the spleen, it becomes enlarged and painful. The spleen can be damaged and scarred after many episodes of splenic sequestration. By age 8, many children with SCD have had their spleen removed. Or they may have lasting damage from repeated splenic sequestration. The risk for infection is a major concern for children without a working spleen. Infection is the major cause of death in children younger than age 5.

    • Stroke. If the blood vessels to the brain are blocked, a stroke can occur. Serious long-term problems may result. A child who has had a stroke is more likely to have another one.

    • Infections. Babies and children with SCD have a higher risk for infections.

    • Priapism. The sickle cells block the blood vessels in the penis, causing a painful, prolonged erection. If not treated right away, this can lead to the inability to have an erection (impotence).

    SCD can affect any major organ. This can cause:

    • Frequent infections

    • Leg ulcers or serious sores

    • Bone damage

    • Gallstones 

    • Kidney damage

    • Eye damage

    • Multiple organ failure

    How can I help my child live with sickle cell disease?

    Advances in preventive care and new medicines have reduced the life-threatening problems of sickle cell. But it is still a severe, chronic, and sometimes fatal disease. Your child should be carefully managed by specialists. How your child is managed depends on:

    • The type of sickle cell your child has

    • How severe the disease is

    • How often your child has complications

    • How well you and your child follow preventive efforts

    You may not be able to fully prevent your child from having complications of SCD. But helping your child live a healthy lifestyle can reduce some of the problems. Make sure your child has regular eye exams and gets stroke screening tests. Also talk with your child’s healthcare provider about making sure your child:

    • Eats a healthy diet

    • Gets enough sleep

    • Drinks plenty of fluids

    Be careful about certain exposures that may set off a crisis for your child. These include:

    • High altitudes

    • Cold weather

    • Swimming in cold water

     Help your child prevent infections by:

    • Staying away from people who are sick

    • Washing their hands often

    • Having all advised vaccines, such as pneumococcal and influenza

    • Having all advised screenings, such as hepatitis C

    • Penicillin is routinely given to all children with sickle cell under the age of 5 to prevent infections

    When should I call my child's healthcare provider?

    Call your child's healthcare provider or get medical care right away if your child has:

    • Sudden pain, mainly in the chest, belly, arms, or legs

    • Fever greater than 100.4°F (38°C), or as advised by your child's provider

    • Symptoms of an enlarged spleen, such as pain on the left side of the belly

    • Trouble breathing

    • Severe headaches

    • Sudden loss of vision

    • Symptoms of severe anemia (fast heartbeat, dizziness, shortness of breath, or pale skin)

    Key points about sickle cell disease in children

    • Sickle cell disease (SCD) is an inherited blood disorder that is present at birth. This means it is passed down through a parent’s genes.

    • With SCD, the red blood cells have an abnormal C shape. They get stuck in small blood vessels and block blood flow.

    • This blockage can cause pain and lead to infection. It can also damage a child’s major organs, and cause a stroke.

    • Newborns are checked for SCD as part of a group of screening tests.

    • Most children will start to have signs or symptoms during the first year of life.

    Next steps

    Tips to help you get the most from a visit to your child’s healthcare provider:

    • Know the reason for the visit and what you want to happen.

    • Before your visit, write down questions you want answered.

    • At the visit, write down the name of a new diagnosis, and any new medicines, treatments, or tests. Also write down any new instructions your provider gives you for your child.

    • Know why a new medicine or treatment is prescribed and how it will help your child. Also know what the side effects are.

    • Ask if your child’s condition can be treated in other ways.

    • Know why a test or procedure is recommended and what the results could mean.

    • Know what to expect if your child does not take the medicine or have the test or procedure.

    • If your child has a follow-up appointment, write down the date, time, and purpose for that visit.

    • Know how you can contact your child’s healthcare provider after office hours. This is important if your child becomes ill and you have questions or need advice.

    Online Medical Reviewer: Jessica Gotwals RN BSN MPH
    Online Medical Reviewer: Liora C Adler MD
    Date Last Reviewed: 8/1/2023
    © 2000-2024 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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