The present invention includes methods of treating obsessive-compulsive disorder and/or an obsessive-compulsive related disorder or disease. The present invention further includes methods of treating symptoms of a compulsive-like behavior, obsessive-compulsive related disorder, and/or compulsive-like behaviors in an autism spectrum disorder or disease. In certain embodiments, the method comprises administering to the subject a therapeutically effective amount of a positive allosteric α4β2 nicotinic acetylcholine receptor modulator, alone or in combination with another positive allosteric α4β2 nicotinic acetylcholine receptor modulator or an additional agent known to treat the symptoms of obsessive-compulsive disorder, an obsessive-compulsive related disorder, and/or compulsive-like behaviors in autism spectrum disorder or disease.
COMPOSITIONS AND METHODS FOR TREATING COMPULSIVE-LIKE BEHAVIOR IN A SUBJECT