<unk> , also known as sun<unk> , is a type of severe<unk>  illness that results in a body temperature greater than . Other signs and symptoms include red skin, headache, dizziness, and confusion. There is generally a lack of sweating in classic<unk>  while sweating is generally present in exertional<unk> . The start of<unk>  can be sudden or gradual.<unk>  is a life-threatening condition characterized by severe hyperthermia and multiorgan-dysfunction resulting from exposure to<unk> . Medical complications may include seizures, rhabdomyolysis, or kidney failure.<unk>  occurs because of high external temperatures or physical exertion. Some people with certain health conditions are at an increased risk of<unk> . It often occurs under prolonged exposure to extreme environmental or exertional<unk> , which is preventable in most individuals. However, patients with certain genetic predispositions that underlie enhanced susceptibility to<unk>  are particularly vulnerable to<unk>  under relatively mild conditions, especially among pediatric populations. Preventive measures include drinking sufficient fluids and avoiding excessive<unk> . Treatment is by rapid physical cooling of the body and supportive care. Recommended methods include spraying the person with water and using a fan, putting the person in ice water, or giving cold intravenous fluids. While it is reasonable to add ice packs around a person, this by itself is not routinely recommended.<unk>  results in more than 600 deaths a year in the United States. Rates have increased between 1995 and 2015. The risk of death is less than 5% in those with exercise-induced<unk>  and as high as 65% in those with non-exercise induced cases.
Heat stroke
Neuroleptic malignant syndrome
Shark attack
Serotonin syndrome  Serotonin syndrome  1
Dry Drowning
Lightning strike
Spinal shock
Drowning