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Hypothermia is a condition that occurs when core body temperature drops below 95 degrees Fahrenheit (35 degrees Celsius). It is a medical emergency. In hypothermia (hi-poe-THUR-me-uh), the body loses heat faster than it can produce heat, causing a dangerously low body temperature.
The diagnosis of hypothermia usually is clear based on a person's symptoms. The conditions in which the person with hypothermia became ill or was found also often make the diagnosis clear. Blood tests can help confirm hypothermia and its severity.
Symptoms of hypothermia usually develop slowly and may include: Shivering, though this may stop as body temperature drops. Slurred speech or mumbling. Slow, shallow breathing. Weak pulse. Clumsiness or lack of coordination. Drowsiness or very low energy. Confusion or memory loss. Loss of consciousness. In infants, bright red, cold skin.
The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older.
Seek emergency care for anyone who develops severe signs and symptoms of hyponatremia, such as nausea and vomiting, confusion, seizures, or lost consciousness. Call your doctor if you know you are at risk of hyponatremia and are experiencing nausea, headaches, cramping or weakness.
People with frostbite also might have hypothermia. Shivering, slurred speech, and being sleepy or clumsy are symptoms of hypothermia. In babies, symptoms are cold skin, a change in skin color and very low energy.
Malignant hyperthermia is a severe reaction to certain drugs used for anesthesia. This severe reaction typically includes a dangerously high body temperature, rigid muscles or spasms, a rapid heart rate, and other symptoms. Without prompt treatment, the complications caused by malignant hyperthermia can be fatal.
Diphtheria signs and symptoms usually begin 2 to 5 days after a person becomes infected. Signs and symptoms may include: A thick, gray membrane covering the throat and tonsils; A sore throat and hoarseness; Swollen glands (enlarged lymph nodes) in the neck; Difficulty breathing or rapid breathing; Nasal discharge; Fever and chills; Tiredness
Malignant hyperthermia is diagnosed based on signs and symptoms, monitoring during and immediately after anesthesia, and lab tests to identify complications.
If you have a high fever, severe headache, stiff neck, confusion or sensitivity to light, seek emergency care. These signs and symptoms can indicate bacterial meningitis, a life-threatening complication of a listeria infection.