<unk>  is the act of putting the<unk>  into the mouth and rhythmically repeating<unk>  contact for a prolonged duration. It can also be accomplished with any piece of skin within reach (such as the big toe) and is considered to be soothing and therapeutic for the person.<unk>  is generally associated with babies and young children.
Children suck on objects (including pacifiers) to soothe themselves;<unk>  is one of a baby’s natural reflexes and completely typical for babies and young children.
Although some adults do suck their<unk> s it is rarely performed in public, which leads many to believe that adults do not suck their<unk> s at all. The private act of<unk>  by adults is due to the fear of embarrassment or shyness. There are some stigmas attached to<unk>  in public for adults.<unk>  can start as early as 15 weeks of growth in the uterus or within months of being born. Prior to 12 weeks, the fetus has webbed digits. Most<unk> -suckers stop gradually by the age of five years. Rarely does it continue into adulthood. It is not uncommon for<unk> -suckers to suck both<unk> s or their fingers. Finger<unk>  is synonymous with<unk>  in effect and treatment, but less common.
Thumb sucking
Burping
Pressure of speech
Scoop and Run
Cramp
Mourning
Bedwetting
Trench mouth