myxedema coma is a rare condition that needs emergency care. it can occur in a person who has untreated, severe hypothyroidism. it usually occurs in older adults who have other illnesses, such as a serious infection or heart attack, along with their hypothyroidism.
these life-threatening symptoms may occur:
- mental deterioration such as apathy, confusion, and psychosis
- extremely low body temperature (hypothermia)
- extremely slow heartbeat (fewer than 60 beats a minute)
- heart failure
- respiratory failure
death can occur if myxedema coma is not treated. emergency treatment may include thyroid hormone replacement given in a vein (intravenously) and steroid therapy.