Gyaltsen Tashi wrote:
What causes these mental illnesses - schizophrenia and depression? How are they treated in Tibetan medicine?
There are many possible causes of depression. These will be treated according to their causes which are imbalances in the dośas (humors) caused by diet, behavior, season or spirits or a combination of these.
What western medicine terms "schizophrenia" will generally be considered a spirit induced disorder. This will be treated generally with massage, herbs, diet and lifestyle, depending on the type of spirit diagnosed.