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; ...
Skin contact can cause redness, swelling, blisters, severe skin destruction, swelling of the eye (cornea), or loss of sight. To prevent poison ivy from causing skin irritation, wash exposed area with water within 5 to 10 minutes of contact. Use soap and water first, then ether or alcohol.