I originally posed a theory that Britney Spears might be suffering from a mental illness such as postpartum depression (PPD) or bipolar disorder. Furious Seasons linked to an article on tmz.com (by way of Celebrity Baby Blog – wtf?) where “sources say doctors at her rehab facility think the underlying reason for her trouble may be post-partum depression.”
As for my theories:
“Sources tell TMZ that Britney’s doctors have two operating theories — either that she suffers from post-partum depression or bipolar disorder. The doctors strongly believe post-partum is the problem.”
At least I got the plausible diagnoses. Damn, I’m good.
(A nice pic of the former ‘sexy’ days of Ms. Spears.)
UPDATE: The Trouble With Spikol also wrote her own take on it too.
depression introspection 
Hi again..some info about PPD
Antidepressants combined with some therapy are been used for postpartum depression treatment by most of the professionals. Since diagnose of post partum depression not only affect the patient but also affects everyone around you, including your baby, it is important for mothers with postpartum depression to seek help immediately.
Babies need their mother, and when the mother is unable to provide emotional nourishment and loving care, and then a baby will suffer as it grows into adulthood.
Health Watch Center
http://www.selfhelpzone.com/