Sometimes it s downright dangerous. ADDers are more likely than the general population to experience depression, obsessive-compulsive disorder, substance abuse problems, car accidents, learning disabilities, anxiety disorders, and sleep disorders. Definitely not a bed of roses.
Depression seems to be the most common co-morbid condition.
Next is substance abuse and alcoholism. I d like to share with you. Especially when your ADD is undiagnosed, you really have no answer for that question. I think I ve said before that being diagnosed was liberating for me. ADDers tend to be very inconsistent, too.