Primary polydipsia symptoms, such as delusions involving fluid intake or other unusual behaviours. Primary polydipsia may have physiological causes, such as autoimmune hepatitis. Since primary polydipsia is a diagnosis of exclusion, the diagnosis may be made for patients who have medically unexplained excessive thirst, and this is sometimes incorrectly referred to as "psychogenic" rather than "primary" polydipsia. As a diagnosis of exclusion, a diagnosis of primary polydipsia may be the result of elimination of the possibility of diseases causing similar signs and symptoms, such as diabetes insipidus. Diagnosis may be complicated by the fact that chronic and extreme compulsive drinking may impair
Patient diary medication according to the treatment schedule, which is an important problem during clinical trials and the treatment of degenerative diseases with relatively few symptoms. Patient diary A patient diary is a tool used during a clinical trial or a disease treatment to assess the patient's condition (e.g. symptom severity, quality of life) or to measure treatment compliance. An electronic patient diary registers the data in a storage device and allows for automatically monitoring the time the entry was made. Frequent recording of symptoms using a diary helps to reduce recall bias. Electronic diaries ensure entries are made as scheduled, and