An underlying disease or a response to medication can sometimes cause stereotypic behavior. It is also apparent that certain breeds are genetically inclined to exhibit these behaviors. For example, many Siamese cats are predisposed to suck and chew wool. The cat's owners can actually be the cause of the anxiety that leads to displacement behavior and if the anxiety continues, to stereotypic or compulsive behavior. He decides on a grooming session instead.
Most cats briefly groom their flanks or back after a mild upset.
When this behavior becomes compulsive, it is called psychogenic alopecia and the targets are generally the lower abdominal region, the backs of the legs, the lower back, and the feet, shoulders, and front legs. In severe cases the cat may actually pluck out large patches of fur causing bald patches. Bouts of excessive licking may be sporadic or continuous and they may occur when the owner is nearby or when the cat is alone. If the owner is present, he should observe the circumstances in which the behavior occurs, how it begins, and when it happens, so that the cat can be distracted at times of risk by encouraging it to engage in other rewarding activities, such as play or feeding. The cure for this behavior is to determine the source of the stress and to remove it, if possible.