What causes a man's beard to grow quickly?

Men may experience fast beard growth due to physiological factors, such as hormone secretion, or pathological causes, including frequent shaving and hyperthyroidism.

1. Physiological factors: If the body normally produces high levels of hormones, particularly increased secretion of androgens, this may lead to more vigorous hair growth, resulting in the symptom described. This condition is generally normal and usually does not require treatment.

2. Pathological factors

1) Frequent shaving: Regularly shaving facial hair can stimulate hair growth. Additionally, excessive shaving may cause skin damage and increase the risk of infection. It is advisable to reduce the frequency of shaving to avoid over-irritation.

2) Hyperthyroidism: Overactive thyroid function leads to excessive secretion of thyroid hormones, which may stimulate androgen production and disrupt hormonal balance, thereby causing rapid hair growth. In such cases, medications like propylthiouracil tablets or methimazole tablets should be used under a doctor's guidance.

In addition, rapid beard growth might also be associated with adrenal tumors. If any related symptoms occur, prompt consultation with an endocrinologist is recommended.