<Dd> If the auriculotemporal nerve is damaged (most often as a result of a Parotidectomy), excess sweat can be produced in the rear of the cheek area (just below the ear) in response to stimuli that cause salivation . </Dd> <Dd> When the eccrine glands become exhausted and unable to secrete sweat . Heatstroke can lead to fatal hyperpyrexia (extreme rise in body temperature). </Dd> <Dd> (also known as polyhidrosis or sudorrhea) is a pathological, excessive sweating that can be either generalized or localized (focal hyperhidrosis); focal hyperhidrosis occurs most often on the palms, soles, face, scalp and axillae . Hyperhidrosis is usually brought on by emotional or thermal stress, but it can also occur or with little to no stimulus . Local (or asymmetrical) hyperhidrosis is said to be caused by problems in the sympathetic nervous system: either lesions or nerve inflammation . Hyperhidrosis can also be caused by trench foot or encephalitis . </Dd> <Dd> Also called prickly heat . Milaria rubra is the rupture of sweat glands and migration of sweat to other tissues . In hot environments, the skin's horny layer can expand due to sweat retention, blocking the ducts of eccrine sweat glands . The glands, still stimulated by high temperatures, continues to secrete . Sweat builds up in the duct, causing enough pressure to rupture the duct where it meets the epidermis . Sweat also escapes the duct to adjacent tissues (a process called milaria). Hypohydrosis then follows milaria (postmiliarial hypohydrosis). </Dd>

Sebaceous glands are a form of sudoriferous gland