Hair Loss in Men

It's still good to consider prescription and over-the-counter drugs because many types of medications can cause hair loss, even if you have been taking the drug for a long time.

Sometimes an underlying medical illness is the cause of hair loss. For example, thyroid problems -- both an overactive and underactive thyroid gland -- can cause hair loss.

Symptoms of an overactive thyroid gland (hyperthyroidism):

- Feeling jittery or anxious

- Weight loss

- Heat intolerance

- Racing or irregular heart beat (palpitations)

- Insomnia

- Tremor

Symptoms of an underactive thyroid gland (hypothyroidism):

- Weight gain

- Feeling sluggish

- Cold intolerance

- A slower-than-usual heart rate

- Dry skin

Does either of these sets of symptoms apply to you?

Yes, one of those sets of symptoms does apply to me.

No, I have not noticed any of these symptoms.