Loss of consciousness or coma caused by a decrease in thyroid hormones in the blood (severe hypothyroidism). It is more common in older women and during cold seasons.
It is caused by poorly controlled chronic hypothyroidism of unknown origin. There are triggering factors that can precipitate its onset: stress, infection, trauma or medication.
Symptoms include low body temperature (hypothermia), low blood glucose levels, low respiratory rate, low heart rate and low level of consciousness with drowsiness, apathy and even coma. It may be followed by brittle nails and hair, pale and dry skin, and swelling of the arms and legs.
Diagnosis is made by clinical interview, physical examination and blood tests.
It is a condition that requires hospitalisation. Treatment is aimed at correcting the thyroid hormone deficiency.
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