What are the causes of male urine foaming?

If only pure urine foam, and there is no merger with frequent urination, urgency, pain, nor edema and other physical discomfort, it is generally considered to be caused by insufficient water. It is recommended to drink more water, water, water supplement after the foam will become less. If combined with frequent urination, urgency, pain or edema, generally considered to be caused by urethritis or nephritis. It is recommended to the hospital to do a related examination, if it is clear urethritis or nephritis, it is the need for treatment. Urethritis, it is oral medication commonly, and nephritis should be treated accordingly to nephrology.