Sickle Cell Disease

Sickle Cell Disease

Key Takeaways Sickle cell disease (SCD) is a group of inherited blood disorders, not a single condition. All forms involve hemoglobin S (HbS), produced by a mutation in codon 6 of the β-globin gene that swaps glutamic acid for valine. Pathophysiology ▾:...
Multiple Myeloma

Multiple Myeloma

Key Takeaways Multiple myeloma is a cancer of plasma cells, a type of white blood cell that produces antibodies. In this condition, abnormal plasma cells multiply uncontrollably and accumulate in the bone marrow. It is slightly more common in males than females and...
Hemophilia

Hemophilia

Key Takeaways Hemophilia is an inherited disorder of secondary hemostasis caused by a deficiency of factor VIII (hemophilia A) or factor IX (hemophilia B); both result in delayed, deep tissue bleeding rather than immediate surface bleeding. Clinical features ▾:...
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