s clinics, only a small minority have no other conditions,[69] and obsessive–compulsive
disorder (OCD)
and attention-
deficit hyperactivity disorder (ADHD) are often present.[22][28] In children with Tourette's, ADHD is associated with functional impairment, disruptive behavior, and tic severity. Other comorbid conditions include self-injurious behaviors (SIB), anxiety, depression, personality disorders, oppositional defiant disorder, and conduct disorders.