## Overview Hyperhidrosis is sweating out of proportion to temperature or exercise. It may be generalized or patchy. Causes include pain, equine grass sickness, Horner's syndrome (unilateral facial sweating), pheochromocytoma, and other systemic diseases. Persistent sweating at rest warrants investigation. ## Causes Pain, autonomic dysfunction, grass sickness, endocrine tumors, or environmental factors. ## Diagnosis History and physical examination looking for associated signs (colic, dysphagia, Horner's syndrome). Further testing as indicated. ## Treatment Directed at the underlying cause. Supportive cooling and fluid replacement as needed. ## Recovery and Prognosis Depends entirely on the primary condition. ## Prevention Depends on etiology.
excessive sweating disproportionate to temperature or work; may be patchy or generalized; associated signs depend on cause (grass sickness, Horner's syndrome, pain)
## Overview Hyperhidrosis is sweating out of proportion to temperature or exercise. It may be generalized or patchy. Causes include pain, equine grass sickness, Horner's syndrome (unilateral facial sweating), pheochromocytoma, and other systemic diseases. Persistent sweating at rest warrants investigation. ## Causes Pain, autonomic dysfunction, grass sickness, endocrine tumors, or environmental factors. ## Diagnosis History and physical examination looking for associated signs (colic, dysphagia, Horner's syndrome). Further testing as indicated. ## Treatment Directed at the underlying cause. Supportive cooling and fluid replacement as needed. ## Recovery and Prognosis Depends entirely on the primary condition. ## Prevention Depends on etiology.
excessive sweating disproportionate to temperature or work; may be patchy or generalized; associated signs depend on cause (grass sickness, Horner's syndrome, pain)