<unk>  is not common among PD patients. Prevalence may be around 4%. Its prevalence is higher among males with an early onset of the disease. Previous substance abuse such as heavy drinking or drug intake seems to be the main risk factor along with a history of affective disorder.
Dopamine dysregulation syndrome
Hyperprolactinemic SAHA syndrome
Sheehan's syndrome
Autoimmune polyendocrine syndrome
Hypothalamic disease
Dopamine transporter deficiency syndrome
Gerstmann syndrome
Hypopituitarism