Sickle Cell Anemia

Sickle cell anemia is an inherited blood disorder that affects the shape and function of red blood cells. Instead of being round and flexible, red blood cells become rigid and crescent-shaped, resembling a sickle. These abnormal cells can block blood flow and break down prematurely, leading to reduced oxygen delivery to tissues. Sickle cell anemia is a lifelong condition that usually begins in early childhood.

Symptoms

Symptoms can vary in severity and may appear in early infancy.

• Chronic anemia causing fatigue and weakness

• Episodes of severe pain known as pain crises

• Swelling of hands and feet, especially in infants

• Frequent infections

• Delayed growth and puberty in children

• Vision problems due to damage to blood vessels in the eyes
  Pain episodes may last from hours to days and can occur without warning.

Causes

Sickle cell anemia is caused by a genetic mutation inherited from both parents. This mutation affects hemoglobin, the protein in red blood cells that carries oxygen. The abnormal hemoglobin causes red blood cells to become stiff and sickle-shaped under certain conditions, such as low oxygen levels, dehydration, or infection.

Risk Factors

The main risk factor for sickle cell anemia is inheritance.

• Having both parents who carry the sickle cell gene

• Family history of sickle cell disease

• Genetic background associated with regions where malaria was common
  Individuals who inherit only one copy of the gene are carriers but usually do not have symptoms.

Complications

Sickle cell anemia can cause serious and sometimes life-threatening complications. These include recurrent infections, stroke, acute chest syndrome, and damage to organs such as the spleen, kidneys, and liver. Chronic pain and reduced life expectancy may occur without proper management.

Prevention

Sickle cell anemia cannot be prevented once inherited, but early detection and proper care can reduce complications. Newborn screening allows for early diagnosis and timely treatment. Genetic counseling helps individuals understand inheritance risks. Preventive measures such as vaccinations, infection prevention, adequate hydration, and regular medical follow-up play an important role in improving quality of life.