Answer:
It develops when the immune system overreacts to a drug, dust, and ect.
Answer:
Position the person on his or her back.
If there are no injuries and the person is breathing, raise the person's legs above heart level — about 12 inches (30 centimeters) — if possible. Loosen belts, collars or other constrictive clothing. To reduce the chance offainting again, don't get the person up too quickly.
The uncontrollable muscle spasms
