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; ...
What is poison ivy, oak, and sumac? Poison ivy, poison oak, and poison sumac together produce more cases of allergic contact dermatitis than all other allergens combined. The resulting rash can be anything from mildly unpleasant to a true emergency with intense swelling, blistering, and oozing.