Sleep hyperhidrosis

Sleep Hyperhidrosis, or excessive sweating during sleep, can be due to a variety of underlying disorders, such as:

• febrile illness
• diabetes insipidus (this is not diabetes mellitus)
• Hyperthyroidism 
• Pheochromocytoma (secretion from usually benign cells in the brain that produces excessive sweating as one of its symtoms)
• Hypothalamic lesions in the brain
• Epilespy
• Cerebral and brain stem strokes
• Cerebral palsy
• Chronic paroxysmal hemicrania (sudden onset migrane)
• Spinal cord infarction (sudden insufficiency in blood supply)
• Head injury
• Familial dysautomia (a congenital syndrome with specific disturbances of the nervous system)
• Can occur in pregnancy and can be produced by antipyretic medications (anti-nausea)
• Obstructive sleep apnea