age) causes obsessive-compulsive and rela ted symptoms. In addi tion, the disturbance
cannot be better explained by a primary obse ssive-compulsive and related disorder, a sub-
stance/medication-induced obsessive-compul sive and related disorder, or another men-
tal disorder.
There is some controversy about whether ob sessive-compulsive and related disorders
can be attributed to Group A streptococcal infection. Sydenham’s chorea is the neurolog-