Prior to the onset of hypothermia the body maintains a relatively stable temperature whereby heat production is balanced by heat loss. When the outside environment gets too cold or the body's heat production decreases, hypothermia occurs (hypo=less + thermia=temperature).
The main symptom of poison oak, ivy, or sumac is an intensely itchy, red rash. ... However, you should contact a doctor right away if you are highly sensitive or have the following symptoms: Swelling of the face or throat; Rash on the genitals; ...
Why do I get a rash from poison ivy, oak or sumac plants? Poison ivy and related plants produce an oily resin called urushiol (yoo-ROO-shee-ol). When exposed to your skin, urushiol often triggers the bodyâs allergic response, resulting in redness, inflammation and itching.