Also found in: Dictionary.
the habit of sucking the thumb for oral gratification. It is normal in infants and young children as a pleasure-seeking or comforting device, especially when the child is hungry or tired. The habit reaches its peak when the child is between 18 and 20 months of age, and it normally disappears as the child develops and matures. Thumbsucking beyond 4 to 6 years of age may lead to malocclusion of the teeth and deformation of the bony tissue of the thumb. Excessive thumbsucking, especially in older children, may be indicative of some emotional problem.
Patient discussion about thumbsucking
Q. What does thumb or finger sucking mean in ADULTS? People watch the unusual behavior of a person and decide their disorder. I strongly agree, but here is a critical question for you all. What does thumb or finger sucking mean in ADULTS?
A. It’s not a show to enjoy and laugh! It means that whomever you are talking about needs to see a psychologist. I am not joking. Things we are supposed to out-grow but don't, i.e. thumb sucking, imaginary friends or bed wetting, can represent serious problems or mental blocks.More discussions about thumbsucking