Rob Lowe worries he is a "narcissist".
The hunky actor knows he is good looking but regularly checks with his therapist to ensure he isn't overly preoccupied with his appearance.
He said: "I've had years of psychiatry, and I ask about every six months -- it's sort of like getting your oil checked -- I ask, 'I'm not an actual narcissist, am I?'
"The learned men of psychiatry assure me that I meet none of the medical criteria. The fact that we can even ponder the question immediately disqualifies me from being one."
The 'Sex Tape' actor also claimed his appearance has prevented him from being offered "deep or interesting" roles and thinks it is only now he is getting older that he is able to properly show off his range.
He told the New York Times magazine: "There's this unbelievable bias and prejudice against quote-unquote good-looking people, that they can't be in pain or they can't have rough lives or be deep or interesting.
"They can't be any of the things that you long to play as an actor. I'm getting to play those parts now and loving it. When I was a teen idol, I was so goddamn pretty I wouldn't have taken myself seriously."
And Rob, 50, admitted he was a "nerd" who no one thought of as "cool" until he found fame.
He added: "My deep dark secret is that I was a nerd in school. I liked the theater. I liked to study. I wasn't very good at sports. It took being famous to make me cool, which, by the way, I never forgot."

Lindsay Lohan's friends are "worried" about her plans to attend the Coachella festival.
The 'Mean Girls' star - who recently confessed to having "one glass of wine" since leaving rehab for the sixth time - is planning to head to the Californian music festival later this month with her mother Dina, but those close to her are not confident the showbiz matriarch will be able to prevent her daughter from resisting "temptation.
A source told RadarOnline.com: "Lindsay should not be going to Coachella.
"And having Dina with her isn't really making anyone feel comfortable that she will be a good chaperone. It's a big alcohol and drug festival and it is the last place that Lindsay should be.
"Lindsay swears that she'll stay sober, but Coachella is a huge party and there are going to be so many temptations for her. Everyone is really worried about her."
Meanwhile, the 27-year-old actress - who attended last year's event with her 16-year-old brother Cody before checking in to court-ordered rehab - reportedly turned up late to an Alcoholics Anonymous (AA) meeting and left early around the time of her relapse.
An insider claimed Lindsay attended the group near her New York apartment but made little effort to engage with the other participants.
The source said: "She took a seat in the back of the room with her sober coach. She seemed bored.
"Lindsay didn't seem interested in speaking with anyone. She stuck to herself.
"It's unheard of to arrive late or to leave a meeting early. It was shocking."

Kristin Cavallari is finding pregnancy is more difficult this time around.
The former reality star - who rose to fame on 'The Hills' and 'Laguna Beach' - announced in February that she is expecting her second child with NFL player husband Jay Cutler, but she is suffering more "aches and pains" than she did when carrying her son Camden two years ago.
Speaking about raising the 20-month-old tot whilst pregnant, Kristin, 27, explained: "[There are] more aches and pains. With the first one you can sleep all day, but now I'm running after Camden."
Kristin - who now hosts E! show 'Fabulist' - insists her pregnancy hasn't prevented her from leading an active lifestyle and she has been trying to satisfy her craving for sweet foods with healthy snacks, though she has also been happy to indulge.
She added to 'Access Hollywood Live': "I'm such a healthy eater and I was working out until about two weeks ago, [I've been craving] apples with almond butter, but I do have a big sweet tooth. I've been eating ice cream sandwiches."
Meanwhile, Kristin says she couldn't be happier with her husband's parenting skills, and Jay is looking forward to having another boy.
Kristin gushed: "He's a really good dad. He's with [Camden] all the time. He's great, He's so excited that it's another boy. It's going to be interesting, surrounded by men, it could be worse!"

Kate Mara is in talks to play the victim of kidnapper Ariel Castro in a new biopic.
The 'House of Cards' actress - who portrayed journalist Zoe Barnes in the first series of the drama - will play Michelle Knight, who was held prisoner with another two women in Cleveland for over 10 years until May 6, 2013, when one of the women escaped and contacted the police.
Source told the New York Daily News' Confidenti@l column: "After her sensational turn in 'House of Cards,' producers at Sony are desperate for Kate to take on the role of Michelle Knight.
"They feel that Kate would be able to capture Michelle's vulnerability and psychological pain -- something she excelled at as Zoe Barnes."
Michelle - who was 21 when she disappeared in 2002 - was held hostage alongside Amanda Berry, and Georgina 'Gina' DeJesus, and the women were lured inside his house after they accepted a lift from him.
Meanwhile, 'The Wire' star David Costabile and 'The Breakfast Club' actor Emilio Estevez are in the running to play Ariel, who was arrested the same day the women were freed.
He pleaded guilty to 937 criminal counts of rape, kidnapping, and aggravated murder and was sentenced to life in prison without the chance of parole plus 1,000 years.
A short time into serving his sentence he committed suicide by hanging himself with bedsheets in his prison cell.

Drew Goddard is in talks to direct 'The Amazing Spider-Man' spin-off 'Sinister Six'. The 39-year-old filmmaker wrote the script for the forthcoming film and is now negotiating a deal with the studio to helm the project, according to deadline.com. Son...

Breck Eisner has been confirmed as director for 'Karate Kid 2'. Sony Pictures has negotiated a deal with the filmmaker to helm the follow-up to the popular martial arts action movie which will see Jaden Smith and Jackie Chan reunite, reports Deadline....

Cheryl Cole has enlisted Nicola Roberts to write her a hit song.
The 'X Factor' judge hit the studio with her best pal and former Girls Aloud band mate over the weekend in the hopes of recording a chart-topping song to rival her 'Call My Name' collaboration with Calvin Harris.
The 30-year-old star wrote on Twitter: "@NicolaRoberts is like a little volcano just bubbling away waiting to erupt with hits! #watchthisspace #mygirl #soproud she's got me like (crying face)."
Meanwhile, Nicola revealed the experience had been an emotional one because of how close the pair are and hinted she has written some heartfelt songs about Cheryl's personal life for her fourth album.
The 'Beat of My Drum' hitmaker posted: "I have loved writing for Cheryl! So much fun! Sometimes a heavy heart has come, being a best friend & writing from that perspective for her. (sic)"
She added: "Can't wait for you to hear her new music."
This will be Cheryl's newest material since she split from her long-term boyfriend Tre Holloway last October, after struggling to maintain a long-distance relationship, although the pair are reportedly still friends.
The singer is famously unlucky in love and was left heartbroken after her divorce to soccer star Ashley Cole in 2010 after he cheated on her.

Coldplay are planning to release another album next year.
The 'Paradise' hitmakers, whose new record 'Ghost Stories' will be released next month and is a departure from their usual sound, are reportedly planning a more commercial follow-up album in 2015.
A source told the Daily Star newspaper: "'Ghost Stories' is sort of a low-key release for Coldplay, if that's possible.
"It's their chance to try out some different ideas on a smaller scale before coming back next year with a more traditional record."
The band - featuring Chris Martin, Jonny Buckland, Guy Berryman and Will Champion - have been experimenting with their sound in a similar way to Radiohead and U2 did in the middle of their careers by recording more atmospheric tracks.
The source continued: "U2 did it with 'Achtung Baby' and 'Zooropa'. And it's no secret Coldplay have always admired Radiohead.
"They did a similar thing with their experimental 'Kid A' album in 2000, returning a year later with sister release 'Amnesiac'. It's that kind of idea."
Chris, 37, has been focusing on the band's upcoming release after splitting from his wife of 11 years, Gwyneth Paltrow, 41.
The frontman - who is renowned for writing confessional lyrics - has also written about the "pain" of infidelity on the band's new track 'Another's Arms', which is speculated to be the reason for their split.
Despite the new release of the new album, the band "probably" won't be performing many gigs this year and will focus on smaller dates.
The source added: "Next year is when fans can look forward to some much bigger Coldplay tour dates."
Coldplay will release 'Ghost Stories' on May 19.

Britain's Prince George will take part in his first royal engagement tomorrow (09.04.14).
The eight-month-old prince will join his parents Prince William and Duchess Catherine at a parent and baby coffee group at Government House in Wellington, New Zealand, and the 10 families who will share time with the family during the session are very excited.
Ingrid and David Alve were stunned when senior Plunket nurse Tina Symes invited them to the event with their eight-month-old daughter Eden.
Ingrid said: "We were quite surprised - delighted obviously - but it was a bit surreal, a tiny corner of the country and they called us."
And Eden will be taking along her toy bunny rabbit, which they named George in honour of the prince.
David told the New Zealand Herald newspaper: "Hopefully George will play with it."
Another parent, Kate Bainbridge, will take along her eight-month-old daughter Sophie and admitted some of her friends were "jealous" of their invitation.
She said: "I've had a few jealous looks from other parents when they found out we were meeting the duke and duchess.
"Even though we come from a very different background we have got a lot in common with the duke and duchess because we've been through the sleepless nights and we can talk to them about our experiences.
"We are all first-time parents, like them, so it should be quite easy to chat to them."
Ms. Symes was tasked with choosing the families to join the session and selected babies born in July, the same as George, in an even split of genders and a range of backgrounds to reflect the community.
Tristine Clark, New Zealand president of Plunket, said: "The parents are a spread of all the communities in New Zealand, including Maoris, Samoans, people of Chinese descent and gay couples.
"This is a very multi-cultural country and we wanted the Duke and Duchess to meet people from all backgrounds."

Kim Kardashian's controversial Vogue cover is flying off the shelves.
While the fashion bible has been criticised by some - including actress Sarah Michelle Gellar - for putting the reality TV star on its April 2014 cover, along with her rapper fiancé Kanye West, the issue is selling "on par" with best-selling past editions featuring Beyonce and US First Lady Michelle Obama.
According to the New York Post newspaper, the issue is expected to sell between 300,000 and 400,000 copies.
Meanwhile, Beyonce's March 2013 cover sold around 355,000 copies, and a cover starring Michelle sold just under 300,000 copies in April 2013.
However, a spokesperson for Vogue says the magazine "never comments on sales figures".
Vogue has come under fire from some subscribers for featuring Kanye, 36, and Kim, 33, in a wedding-themed cover shoot for its latest issue, with 'Buffy the Vampire Slayer' star Sarah, 37, boldly claiming she would cancel her subscription.
She wrote on Twitter: "Well......I guess I'm cancelling my Vogue subscription. Who is with me??? (sic)"
But esteemed Vogue editor Anna Wintour has defended her decision to feature Kim on the cover.
She wrote in her editor's letter: "Kanye is an amazing performer and cultural provocateur, while Kim, through her strength of character, has created a place for herself in the glare of the world's spotlight, and it takes real guts to do that. I think we can all agree on the fact that that role is currently being played by Kim and Kanye to a T. (Or perhaps that should be to a K?)."

Victoria Beckham is planning to become an ambassador for an AIDS charity.
The former Spice Girls singer will work with the United Nations as a goodwill ambassador for their UNAIDS campaign after being inspired by a recent trip to South Africa, where she met with children stricken by the deadly disease.
A friend of the star told The Sun newspaper: "She wants to give back by doing what she can."
The fashion designer - who has children Brooklyn, 15, Romeo, 11, Cruz, nine, and two-year-old Harper with her spouse - visited Cape Town in February as part of the Born Free initiative, which tackles the issue of HIV being transmitted from mothers to their children.
Victoria - who turns 40 next week - and her husband are no strangers to charitable endeavours and last year donated thousands of pounds worth of designer clothes to their local Red Cross charity shop in west London, sparking lengthy queues as fans rushed to get their hands on a bargain.
And their generosity has been passed down to their children, with their eldest son opting to save his allowance in order to buy Thanksgiving gifts for homeless people.
A source previously said: ''Brooklyn told his mum and dad that he didn't want to receive presents for Thanksgiving this year. He said instead he'd like to donate them to people who need them more.
''Brooklyn asked one of the family bodyguards to take him to a Rite Aid store in Los Angeles so he could buy some first-aid kits to put in the charity parcels.''

Miranda Kerr feels "really lucky" to have Orlando Bloom still in her life.
The Australian model split from the 'Lord of the Rings' star last October after three years of marriage and she thinks separating was for the best for their three-year-old son Flynn.
Speaking on 'Good Morning America', she said: "I think it's really important to have two happy parents. He's really happy and I'm happy.
"He's a great dad. I'm really lucky to have him in my life."
The 30-year-old beauty also spoke about the pressure of body image after giving birth, insisting she readily accepted the fact her shape would change completely after carrying a child.
She said: "I had to surrender completely to the fact that maybe my body would never get back into shape and I was fine with that."
Orlando, 37, recently admitted he and Miranda, 30, felt it was important they continue to get along and "respect" one another for the sake of their son, and believes there will always be a "deep love" between them.
He said: "It's ever evolving, but I've said to her, 'We're going to be in each other's lives for the rest of our lives and we have a child, so it's important to me that we respect each other as we always have and that Flynn feels that and understands that.' There's a deep love between us."