Comorbidity is the norm. The majority of people with health issues have more than one condition because a lot of these things are related. ADHD and Aspergers are related conditions. Trichotillomania and hypochondria are different manifestations of OCD. OCD is a common trait in those with Aspergers / ADHD. Depression is almost always comorbid with anxiety. Reflux and scoliosis are common too. People who have anxiety have high rates or irritable bowel syndrome which involves reflux.