Can a person suffer wih ocd and adhd at the same time?

Absolutely: Having two things at the same time is called comorbid disorders. Having other issues at the same time as having ADHD symptoms is actually fairly common. Some studies show as many as 1 in 3 people with ADHD have another disorder along with it. Treatment is different, and sometimes meds used for ADHD can make OCD worse, so work with someone who knows what they are doing...

Yes. This is a: co-morbid condition; meaning, two separate conditions can exist at the same time. OCD is an anxiety disorder, often with underlying mood issues. ADHD is a focus and organization problem, often with underlying mood issues. Both are brain based. OCD is seen as an overactive brain condition, while ADHD is an underactive one. They can but usually don't come from the same brain areas.

Yes: Fairly common to see ADHD and OCD or another anxiety disorder in the same person. Treatment is more challenging since stimulant meds used for ADHD can increase anxiety; but both are treatable. For more info, see: http://www.additudemag.com/adhd/article/6113.html I hope this helps. Best wishes.

Possibly: I would say it's possible, but likely rare. Getting a second opinion would be of use in such a case.

Yes. The classic : neurodevelopmental disorder in which ADHD & OCD co-exist with multiple motor tics & at least 1 vocal tic for a year or > is Tourette Syndrome. About ⅓rd of kids & teens with ADHD have Anxiety Disorders. The advent of non-stimulant medications like Intuniv, long-acting Guanficine, make it easier to treat both, as stimulants can ^ anxiety. Psychiatrists treat adults who have comorbid ADHD & OCD.

Yes: Can exist together. Treatments for one may also affect the other. Monitoring symptoms of both during treatment for either may be helpful (i.e. Rating scales correlated to given treatment)