The cause of primary<unk>  is unknown. Anxiety or excitement can exacerbate the condition for many sufferers. A common complaint of patients is they get nervous because they sweat, then sweat more because they are nervous. Other factors can play a role, including certain foods and drinks, nicotine, caffeine, and smells. Similarly, secondary (generalized)<unk>  has many causes including certain types of cancer, disturbances of the endocrine system, infections, and medications. Primary Primary (focal)<unk>  has many causes. * Idiopathic unilateral circumscribed<unk>  * Reported association with: * Blue rubber bleb nevus * Glomus tumor * POEMS syndrome * Burning feet syndrome (Gopalan's) * Trench foot * Causalgia * Pachydermoperiostosis * Pretibial myxedema * Gustatory sweating associated with: * Encephalitis * Syringomyelia * Diabetic neuropathies * Herpes zoster (shingles) * Parotitis * Parotid abscesses * Thoracic sympathectomy * Auriculotemporal or Frey's syndrome * Miscellaneous * Lacrimal sweating (due to postganglionic sympathetic deficit, often seen in Raeder's syndrome) * Harlequin syndrome * Emotional<unk>  Cancer A variety of cancers have been associated with the development of secondary<unk>  including lymphoma, pheochromocytoma, carcinoid tumors (resulting in carcinoid syndrome), and tumors within the thoracic cavity. Endocrine Certain endocrine conditions are also known to cause secondary<unk>  including diabetes mellitus (especially when blood sugars are low), acromegaly, hyperpituitarism, pheochromocytoma (tumor of the adrenal glands, present in 71% of patients) and various forms of thyroid disease. Medications Use of selective serotonin reuptake inhibitors (e.g., sertraline) is a common cause of medication-induced secondary<unk> . Other medications associated with secondary<unk>  include tricyclic antidepressants, stimulants, opioids, nonsteroidal anti-inflammatory drugs (NSAIDs), glyburide, insulin, anxiolytic agents, adrenergic agonists, and cholinergic agonists. Miscellaneous * In people with a past history of spinal cord injuries * Autonomic dysreflexia * Orthostatic hypotension * Posttraumatic syringomyelia * Associated with peripheral neuropathies * Familial dysautonomia (Riley-Day syndrome) * Congenital autonomic dysfunction with universal pain loss * Exposure to cold, notably associated with cold-induced sweating syndrome * Associated with probable brain lesions * Episodic with hypothermia (Hines and Bannick syndrome) * Episodic without hypothermia * Olfactory * Associated with systemic medical problems * Parkinson's disease * Fibromyalgia * Congestive heart failure * Anxiety * Obesity * Menopausal state * Night sweats * Compensatory * Infantile acrodynia induced by chronic low-dose mercury exposure, leading to elevated catecholamine accumulation and resulting in a clinical picture resembling pheochromocytoma. *Febrile diseases *Vigorous exercise *A hot, humid environment
Hyperhidrosis
Pitted keratolysis
Dyshidrosis
Dysosmia
Anosmia
Picardy sweat
Aspermia
Nyctalopia