Symptoms of precocious puberty include development of secondary sexual characteristics, rapid growth in height and weight, and neurological abnormalities. 1. Development of secondary sexual characteristics: after precocious puberty affects the hormone secretion in the body, girls may have rapid breast development, changes in external genitalia, and may have menstruation, long pubic hair, axillary hair and other symptoms; while boys show increased testicular volume, penis growth, thickening, and the voice becomes low and so on. 2. Excessive growth in height and weight: mainly due to precocious puberty, resulting in accelerated bone maturation, at this time the height and weight will be more than the same age. Obesity may also occur. 3. Neurological abnormalities: generally common in idiopathic central precocious puberty, mainly due to the hypothalamus pituitary gonadal axis starts too early, resulting in excessive secretion of gonadotropin-releasing hormone, easy to cause dizziness, headache, mental anomalies. If you have any of the above symptoms of precocious puberty, you should consult a doctor in time and seek professional treatment.