Are there any risks associated with letter hyperthyroidism go untreated?

Hyperthyroid: Letting hyperthyroid go untreated leads to heat intolerance, weight loss, irritability, widened blood pressures, sleeplessness, hyperactivity, tachycardia (rapid heart rate) and increased appetite. Continued lack of treatment in very extreme situations could result in presenting in the emergency room and being mistaken for a heart attack. Get treated. It is not costly.

Hyperthyroidism: Yes, it can have implications for metabolism, bone health, heart rhythm, weight, hair, skin.