Whether or not it is normal for a three-year-old to grow a beard depends on the circumstances. If the beard grows and then falls off by itself and returns to normal, generally normal, if the beard has been long, should seek medical treatment as soon as possible.
If a three-year-old child grows a beard and then gradually fall off and return to normal, this situation is mainly due to the temporary accumulation of androgen in the body, generally normal. Parents can continue to observe, let the child drink more water, eat more fresh vegetables and fruits, do not abuse health care products or supplements, so as not to cause precocious puberty.
If the above situation persists without relief, the beard has been long, should go to the hospital as soon as possible endocrine examination, clear whether the pituitary tumor, adrenocortical hyperplasia and other possibilities.