While some celebrity meltdowns are the result of ego or eccentricity, others are the result of something deeper. Here, we've pulled together a list of famous meltdowns that may have had roots in mental illness or drug and alcohol addiction. See more »

Despite a pathological attachment to things they can't stop collecting or discard, hoarders are stressed by their clutter and its effect on their lives. See more »

From the Bouvier Beales to the Collyer brothers -- some hoarding cases are so notorious, they're remembered decades after the fact. What were five of the most famous? See more »

Most of us have days when we don't feel like ourselves. However, some people with dissociative identity disorder feel disconnected from their surroundings, actions and themselves all the time. Learn the myths from facts here. See more »

Helping a hoarder doesn't mean spending a long weekend with a box of trash bags and gloves. Instead, being part of the solution takes a light, nonjudgmental touch. See more »

One month you're so revved about life you give up sleep to enjoy it. The next, you're so depressed you can't get out of bed. Can bipolar disorder be treated? See more »

Maybe you don't like anyone sitting right next to you on the train, but you wouldn't call yourself a claustrophobe. According to some theories, we might all have a touch of claustrophobia -- even if it takes undergoing an MRI scan to provoke it. See more »

In the home of a hoarder, piles of trash might reach the ceiling, and stacks of newspapers so crowd the kitchen that cooking is impossible. Sleeping, eating and bathing may take place in such clutter that health suffers. How can hoarders get help? See more »

Can you inherit compulsive hoarding disorder from a parent? The answer is, you guessed it, complicated, and it starts with an understanding of genetics. See more »

Most shoplifters steal for personal use or resale, but kleptomaniacs are addicted to stealing. But is kleptomania a real mental disorder? See more »