Doctor my son aged years is having pain now at the...

Sickle cell anemia
is one of a group of disorders known as sickle cell disease. Sickle cell anemia is an inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body. Normally, the flexible, round red blood cells move easily through blood vessels. In sickle cell anemia, the red blood cells are shaped like sickles or crescent moons. These rigid, sticky cells can get stuck in small blood vessels, which can slow or block blood flow and oxygen to parts of the body. Periodic episodes of pain, called pain crises, are a major symptom of sickle cell anemia. Pain develops when sickle-shaped red blood cells block blood flow through tiny blood vessels to your chest, abdomen, and joints. Pain can also occur in your bones. which is treated by morphine that's mean a strong pain killer to relive the pain and  need to taken by a doctor with a perscrption
symptoms 

• Anemia. 

• Episodes of pain.

• Swelling of hands and feet.
• Frequent infections. 
• Delayed growth or puberty
• Vision problems. 
• priapism
• chest pain