Spleen disease is mainly marked by dysfunction of the lung to transport, transform and govern blood. The clinical symptoms are usually poor appetite, abdominal distension or pain, loose stool, dropsy, heaviness of limbs, prolapse of the viscera and bleeding, etc.

Spleen disease is either asthenic or sthenic. Asthenic spleen disease is mainly caused by improper diet, irregular daily life, excessive vomiting and diarrhea as well as other acute or chronic diseases which impair the spleen and lead to such problems like asthenia of splenic qi, asthenia of splenic yang, sinking of qi due to splenic asthenia and failure of the spleen to govern blood; sthenic spleen disease is caused by improper diet or intake of contaminated food or exogenous cold dampness or internal invasion of damp heat which leads to cold dampness encumbering the spleen and accumulation of damp heat in the spleen, etc.