Children between the ages of 3 and 5, especially girls are more common to experience a kind of frequent rubbing of the pubic area, sometimes with both thighs crossed and clenched, sometimes with a moving foot or a hard object to rub. Most children in this age group have this symptom because they are bored or emotionally unstable. Emotional instability is more common, mostly due to negative emotions, such as tension, anxiety, worry, or fear, and these negative emotions can lead to a need for self-soothing and self-expression.