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; ...
Poison ivy, poison oak, and poison sumac grow in wooded or marshy areas throughout North America. The plants arenât really poisonous. They have a sticky, long-lasting oil called urushiol that causes an itchy, blistering rash after it touches your skin. Even slight contact, like brushing up against the leaves, can leave the oil behind. Poison ivy and poison oak grow as vines or shrubs. Poison sumac is a shrub or tree.