Spleen disorders refer to various conditions affecting the spleen, an organ that plays a crucial role in filtering blood and supporting the immune system. Common disorders include splenomegaly, which is the enlargement of the spleen, and hyposplenism, where the spleen's function is reduced. These conditions can result from infections, liver diseases, or blood disorders. Symptoms of spleen disorders may include pain in the upper left abdomen, fatigue, and increased susceptibility to infections. Diagnosis typically involves imaging tests like ultrasound or CT scans, along with blood tests. Treatment options vary based on the underlying cause and may include medication or, in severe cases, splenectomy, the surgical removal of the spleen.