So someone mentioned Histrionic personality disorder the other day. It's a cluster B disorder, same as narcissism. The threads are moving too fast for me to quote them, but look at the list of symptoms from webmd.com (obviously the last one isn't relevant here):
.....A person with this disorder might also:
-Be uncomfortable unless he or she is the center of attention
-Dress provocatively and/or exhibit inappropriately seductive or flirtatious behavior
-Shift emotions rapidly
-Act very dramatically, as though performing before an audience, with exaggerated emotions and expressions, yet appears to lack sincerity
-Be overly concerned with physical appearance
-Constantly seek reassurance or approval
-Be gullible and easily influenced by others
-Be excessively sensitive to criticism or disapproval
-Have a low tolerance for frustration and be easily bored by routine, often beginning projects without finishing them or skipping from one event to another
-Not think before acting
-Make rash decisions
-Be self-centered and rarely show concern for others
-Have difficulty maintaining relationships, often seeming fake or shallow in their dealings with others
-Threaten or attempt suicide to get attention