Table 2.

Lifetime and Current Comorbidity of DSM-IV Axis I Disorders in Participants With Primary OCD (N = 293)

DSM-IV Diagnosis	Lifetime		Current
	N	%	N	%
OCD only	27	9.2	170	58.0
Any mood disordera	217	74.1	48	16.4
Major depressive disorder	197	67.2	44	15.0
Bipolar disorder	8	2.7	2	0.7
Dysthymia	23	7.8	0	0.0
Depressive disorder NOS	4	1.4	2	0.7
Any psychotic disorder	8	2.7	6	2.0
Any anxiety disordera	154	52.6	111	38.0
Panic disorder	54	18.4	21	7.2
Agoraphobia without panic disorder	4	1.4	4	1.4
Social phobia	81	27.6	55	18.8
Specific phobia	53	18.1	43	14.7
Posttraumatic stress disorder	19	6.5	10	3.4
Generalized anxiety disorder	22	7.5	22	7.5
Any substance use disordera	75	25.6	17	5.8
Alcohol abuse/dependence	68	23.2	13	4.4
Drug abuse/dependence	39	13.3	4	1.4
Any eating disordera	30	10.2	5	1.7
Anorexia nervosa	9	3.1	0	0.0
Bulimia nervosa	9	3.1	3	1.0
Binge eating disorder	4	1.4	1	0.3
Eating disorder NOS	9	3.1	1	0.3
Any somatoform disorder	22	7.5	18	6.1
Hypochondriasis	4	1.4	3	1.0
Body dysmorphic disorder	18	6.1	15	5.1
Any tic disorderb	41	14.0	16	5.5
Attention-deficit/hyperactivity disorder	30	10.2	8	2.7
Separation anxiety disorder	22	7.5	0	0.0
Any impulse-control disorderc	44	15.0	33	11.3

^aThe total is less than the sum of the individual disorders because some subjects had more than 1 disorder in a given category.

^bIncludes DSM-IV and DSM-III-R diagnoses of Tourette’s disorder, chronic motor or vocal tic disorder, transient tic disorder, and tic disorder NOS.

^cIncludes nail biting, skin picking, trichotillomania, pathological gambling, pyromania, and kleptomania.

Abbreviations: NOS = not otherwise specified, OCD = obsessive-compulsive disorder.