When people come in contact with poison ivy, the urushiol can cause an allergic skin reaction that produces reddish, itchy, and painful inflammation of the skin (dermatitis). Close relatives of poison ivy plants that produce similar dermatitis symptoms are poison oak and poison sumac.
Health conditions that may cause excessive sweating include: 1  Diabetes. 2  Endocarditis. 3  Fever of undetermined cause.  Generalized anxiety 1  disorder. Hiatal hernia.  Heat 1  exhaustion. HIV/ 2 AIDS. Hyperhidrosis.  Hyperthyroidism (overactive 1  thyroid) 2  Leukemia.  Malaria.
Causes of excessive sweating. There are many different causes of excessive sweating. To determine what is causing excessive sweating in a particular individual, a doctor must obtain a detailed medical history and arrange tests to decide if an underlying medical condition is responsible for the sweating.diopathic hyperhidrosis-Idiopathic hyperhidrosis is a condition in which the body chronically produces too much sweat without any identifiable medical cause. Infections-Classically, tuberculosis is the infection most commonly associated with night sweats.