"Her erratic behavior has moved into bipolar disorder," psychologist Dr. Robert Butterworth, who has not treated the singer, told Us magazine.
Recently, Spears' actions have rivaled even her February head-shaving melt-down. Last month she jumped into the ocean wearing nothing but her underwear, and the next day she raised many eyebrows with her conduct during a photo shoot for OK! magazine. According to the magazine, she ruined thousands of dollars worth of clothes and even made off with some. At one point she was grooving to Janet Jackson's "Rhythm Nation" and the next she was storming off.
"Your energy level and emotions alternate between highs and lows, and that seems to have happened here," Butterworth told Us magazine.
"She strikes me as someone going through a delayed adolescence," Ludwig said.
Indeed, some of the postings on Spears' Web site haven't seemed to be the musings of an adult mother of two.
In large, bold red letters, she writes "You'll Never See It My Way Because You're Not Me."
Then she asks her fans to vote on titles for her new album. Among the choices are: "Omg is Like Lindsay Lohan Like Okay Like" and " What if the Joke is on You."
Then she concludes with another cryptic quote: "Mother to grandmother, and my my, you're grand."