Sucks in the fingers (the thumb often - to the nail under / between the thumb and index finger toe ..)
Usually accompanied by sucking some movements regular guide to the feeling of pleasure.
Sucking finger normal in early childhood and often diffuse and varies in children since the first six months, and increased in year 1 and 2 children sucking fingers and legs.
Some of the children leave at the age of 3 years and 50% leave it at the age of 5 years and 75% at the age of 8, while 90% in the tenth.
If I keep sucking fingers until after the sixth must take it seriously and search for causes.
Spreading habit when girls more than boys pre-teen and teenage reflected ratio after it becomes less and boys to girls' desire to maintain their own forms.
التسميات
Sucking fingers