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.
- Extreme stress and anxiety disorders can cause excessive sweating. - Anxiety and stress can cause the body temperature to rise, which can lead to sweating. The embarrassment brought about by excessive sweating can lead to more anxiety, which can lead to further sweating - Some psychiatric drugs can also lead to excessive sweating.