Bladder disease mainly reflects the disorder of the bladder proper and the pathological changes of its functions in storing and excreting urine. The clinical manifestations are frequent urination, urgency in urination, pain in urination and anuria as well as brownish and turbid urine, hematuria and sandy urine, etc.
Bladder disease is often of sthenic nature due to retention of damp heat in the bladder and inhibited transformation of qi in the bladder. The asthenic disease of the bladder is usually caused by asthenic cold in the lower energizer and unconsolidation of the bladder due to asthenia of kidney yang.