Adam Wall Student Coordinator and Student Services Howie Mandel Mysophobia (A pathological fear of contamination/germs) to the point that he does not shake hands with anyone, including enthusiastic contestants on Deal or No Deal, unless he is wearing latex gloves. Instead of shaking contestants' hands when they offer them, Mandel often opts to exchange fist pounds, put his hands on contestants' shoulders, or give an occasional hug. He once kissed a female contestant on the show for good luck despite his mysophobia. He now takes medicine to control his condition and even pokes fun at himself for it. He revealed on The Howard Stern Show on March 24, 2006, that his shaved head is not related to natural hair loss, but to his mysophobia. He stated that the lack of hair makes him feel cleaner. Catherine Zeta Jones Bipolar II Disorder Catherine Zeta Jones may be the new face of bipolar II disorder, but it's no role she hoped to land. Despite now speaking publicly to help remove some of the stigma that comes with the condition, who's to say Jones would've done so it if reports of her treatment hadn't gotten out? "She went to go get some help and some other patient probably in there said, 'Hey, you won't believe who's in here now,'" husband Michael Douglas said during an interview on "The Oprah Winfrey Show." What's the difference between bipolar I and II? According to WebMD, they possess many of the same characteristics -- the highs and lows -- but with bipolar II, the person never reaches full-on mania. Mel Gibson Bipolar Disorder Long before he was winning Oscars -or making headlines for all the wrong reasons -- road warrior Mel Gibson was doing battle with an unseen, offscreen foe: bipolar disorder. Known for his onset pranks and proclivity for after-hours partying, Gibson broached the subject during a 2002 documentary interview with a former classmate. "I had really good highs but some very low lows," Gibson told filmmaker Sally McKenzie for "Acting Class of 1977," which aired on Australian television in 2008. "I found out recently that I'm manic depressive." Numerous articles have been written, linking bipolar mood disorder with artistry. In 2008, a study at the Stanford University School of Medicine found that those with the condition expressed "enhanced creativity," but recommended more research to determine why. Brooke Shields Postpartum Depression Shields has publicly discussed her bout with postpartum depression after the birth of her daughter in 2003. Lasting longer than your typical "baby blues," postpartum depression includes prolonged feelings of anxiety, worthlessness and restlessness in new mothers. She said that at one point, she "didn't want to live anymore" because her depression was so severe. The actress sought treatment early on and learned to manage her disorder with professional help and medications. Emma Thompson Depression Emma Thompson has dealt with depression. In an interview with the Daily Telegraph, Thompson said she battled clinical depression in the past, with her career saving her from "going under." Like other people living with clinical depression, Thompson said she felt sad and hopeless, and was unable to get out of bed at times. Michael Phelps Attention Deficit Hyperactivity Disorder (ADHD) Olympic gold medalist swimmer Michael Phelps has risen to stardom at a fairly young age, and Deborah Phelps, Michael's mother, said she wanted to share Michael's story and his struggles with attention deficit hyperactivity disorder (ADHD). Diagnosed when he was 9 years old, Phelps had trouble concentrating in school, his mother said, but personally prescribed medication and swimming helped Phelps manage the disorder. Howard Hughes Obsessive Compulsive Disorder He is also remembered for his struggle with obsessive compulsive disorder, a condition that causes a combination of unnatural obsessions, anxiety and compulsions, which usually are acted out in repetitive behaviors. Unfortunately, Hughes' OCD led to isolation, increased drug use and his own death, according to the British Broadcasting Corporation. Notably, his obsession with cleanliness and reputation as a "germaphobe" were evident in his daily life and interactions with his employees. In one repetitive routine, he made his workers use several facial tissues and rounds of hand-washing just to fetch his hearing-aid cord. His career and personal battle with the disorder inspired the 2004 Oscarwinning film "The Aviator." Anxiety is also no stranger to this next celebrity. Paula Deen Panic Attacks and Agoraphobia Deen had a hard time doing away with her panic attacks and agoraphobia, she said in an interview on the Larry King Live television show. Agoraphobia is when people fear places they know may lead to a panic attack, especially in situations that are difficult to leave. Deen said her attacks began after her father's death, and continued for nearly 20 years. She wouldn't leave the house without a brown paper bag to breathe into in case she had an attack. "I never knew when they were going to hit me, but it's the most terrifying, uncontrollable feeling," she told King. Deen eventually overcame her panic attacks and agoraphobia on her own, but it's common for people with panic attacks to seek professional help. Elton John Substance Abuse and Bulimia Music star Elton John discussed his uphill battle with substance abuse and bulimia on Larry King Live in 2002. Bulimia is an eating disorder in which people binge, or uncontrollably consume large amounts of food, and then expel the food by vomiting or using laxatives because they don't want to gain weight. Discussing his substance abuse and bulimia, John said he had been "sober and clean" years. "And it was the best thing I ever did. But, you know, those three words -- I need help. If only I'd said them earlier," John explained. Demi Lovato Emotional, Physical Issues Including Bulimia, Cutting, and Bipolar Disorder The Disney star checked into rehab in 2010 for "emotional and physical issues" including bulimia, cutting, and bipolar disorder. "I had no idea that I was even bipolar until I went into treatment," she revealed in 2011. "I was conquering the world, but then I would come crashing down, and I would be more depressed than ever." Carrie Fisher Bipolar Disorder The Star Wars star and best-selling author has talked and written at length about her ongoing struggle with bipolar disorder, most notably in the memoirs Wishful Drinking and Shockaholic. "I thought if I could ever get this to be funny, it would be brilliant," she has said of her mental health struggle. "But it took a really long time. My life dealing with the bipolar situation was far from funny." Jim Carrey Depression The Eternal Sunshine of the Spotless Mind actor has said he took Prozac "for a long time" while battling depression. "It may have helped me out of a jam for a little bit, but people stay on it forever. I had to get off at a certain point because I realized that, you know, everything's just okay," he told CBS News in 2009. "There are peaks, there are valleys. But they're all kind of carved and smoothed out, and it feels like a low level of despair you live in."