The main manifestation of pediatric pinched leg syndrome is rubbing of the perineum. Children may rub their vulva with both legs together or crossed inward or using the corner of a table or chair. In girls, the legs are often crossed and rubbed up and down, with redness, eye gaze and sweating on the forehead or whole body when rubbing. Children tend to do this before going to sleep, when they first wake up, or when they are playing alone. Each episode lasts for a few minutes, and the number of episodes varies, from several times a day to once every few days. In small infants, the movement may stop when picked up from bed or when changing position, and in older children it may be interrupted consciously. Causes 1, local stimulation: such as vulvar dampness, pinworms, wet diapers or pants too tight stimulation caused by local itching vulva, followed by friction, on the basis of this development. 2, psychological factors: some children are not satisfied emotionally due to family tension, lack of maternal love, discrimination, etc., and no toys to play with, seeking catharsis through their own stimulation, resulting in leg clenching action. 3, other reasons: in older children, the influence of yellow videos, yellow books and magazines, is also the cause of “leg clenching” bad behavior. Clinical performance The performance of infants and young children onset of more, 1-3 years old for the high incidence, the attack is sober, the attack of the lower limbs straight cross or clenching, hand clenched fist or grab something, girls also like to sit on hard objects, hand pick up legs or pick up the lower limbs, but also between the legs pinch things; boys more performance for lying on the bed back and forth rubbing, the child’s penis has an erection, urethral cavity edema, girls vaginal secretions increased, with red face In boys, it is more common to see erection of the penis and edema of the urethral cavity, and in girls, increased vaginal discharge with redness, sweating, heavy breathing, and contraction of the perineal muscles, which lasts for several minutes or longer each time, or in severe cases, continuously. Disease prevention First of all, parents should understand the nature of this disease, no need to be anxious and nervous. Do not wear tight clothing and pants, and do appropriate physical activities before bedtime to make the child tired before going to bed, so that he or she can fall asleep quickly. Do not cover too much while sleeping and get up immediately after waking up to eliminate the conditions that lead to such habits. Many children suffer from pinched leg syndrome due to uncleanliness of the vulva, which causes itching. Wash your child’s vulva often, and when doing so, pay attention to rinsing it with water, rather than washing it with your hands, so as not to cause excitement and stimulation, or even cause premature masturbation. Medical Diagnosis In the past, it was thought that the leg-clipping syndrome was “pediatric masturbation”, and later it was thought that the child was harassed by parasites. In recent years, clinicians have found that about 70% of the children have reduced ferritin in their blood, which is thought to be the result of insufficient iron storage in the body, causing disorders of catecholamine metabolism. Treatment plan 1. For young children with initial onset, parents should adopt the method of promptly diverting the child’s attention to make it fade into oblivion. 2. For children with longer duration and stubborn disease, small doses of Tebri can be used under the guidance of a doctor. The current education for medical students in China does not have content on child sexual development, so for this one aspect, doctors do not know much more than mothers. around the age of 6~7, the majority of children’s masturbation will decrease or disappear, a few children will last a lifetime, which is normal. When a child is pinning her legs, it is okay to calmly tell the child to go to her own room because it is a private act. Parents can “turn a blind eye” to their child when she is pinching her legs and do not give her any reinforcement, such as laughing at her, forcing her hand away, scaring her that she will get sick, etc. If parents have these reinforcing behaviors, the child will reinforce the behavior instead. The last thing a parent should do is reprimand the child and not evaluate the child’s behavior in terms of nastiness or criminality, which can cause great psychological damage to the child and be difficult to repair, even affecting the child’s life.