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, oak, and sumac are plants that can cause a red, itchy rash called allergic contact dermatitis. It is the most common skin problem caused by contact with plants.The rash is caused by contact with a sticky oil called urushiol (say yoo-ROO-shee-all) found in poison ivy, oak, or sumac.You can get the rash from: 1  Touching or brushing against any part of these plants, including the leaves, stems, flowers, berries, and roots, even if the plant is dead.ome people are very allergic to the oil. In these people, even a little bit of the oil may cause serious symptoms that need medical attention right away, such as: 1  Trouble breathing. 2  Swelling of the face, mouth, neck, or genitals. 3  The eyelids may swell shut. 4  Widespread, large blisters that ooze a lot of fluid.