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 are the symptoms of poison ivy, oak, and sumac? Wherever the oil touches the skin of a sensitive individual, an exquisitely itchy, red rash will appear between 8 and 72 hours (usually 12-48 hours) later, which will often go on to develop blisters. The first time a person touches this oil, s/he may break out 7 to 10 days later.