Most of us have said at one time or another we're having a bad hair day, but if it happens all the time, it could be a clue on overall health.
If your once thick hair is thinking, it could be a new product you're using or mean a thyroid problem. Dandruff that turns to scaly patches could be a sign of psoriasis. But most of us lose about 100 hairs a day anyway. More than that suddenly could be drive by stress or a new medication.