Your skin is sweaty and ruddy
Unless you’re relaxing in a sauna or living the tropics, this may be a sign of an overactive thyroid. In people who have hyperthyroidism, their metabolism is revved up.
This can translate to being hot and flushed (particularly when no one else in the room is).
Your doctor should question you about other symptoms that could signal thyroid dysfunction, like weight loss or difficulty sleeping.
