Urushiol, is the rash-causing oil found in all parts of poison ivy, poison oak, and poison sumac plants. Approximately 85% of the population experiences an allergic reaction to these noxious plants, and according to the National Institute of Occupational Health & Safety, 50 micrograms of urushiol is enough to cause a rash in 80-90% of adults.
Sweaty palms, more properly known as palmar hyperhidrosis, is a condition that affects about 1% of the US population. Although the exact cause of sweaty palms is still debated, many experts believe it is caused by a hyperactive sympathetic nervous system, causing the sweat glands in the hands to produce sweat unnecessarily.
Primary hyperhidrosis, where the sweating occurs on the palms of the hands, the soles of the feet, under the arms and on the face. Secondary hyperhidrosis is where sweating occurs all over the body. It is understandably embarrassing but worrying about it makes it worse. There are treatments that can help your symptoms. Antiperspirants, which contain aluminium chloride, actually block the sweat glands and are really useful for excessive sweating under your armpits or on your hands and feet.