A mother accused in Pittsburgh of deliberately injecting her 4-month-old son with salt water will be sent to a state mental hospital after a psychiatrist determined she suffered from Munchausen by Proxy syndrome.

Twenty-one-year-old Amber Brewington of Duck River, Tenn., appeared in court Thursday for a competency hearing. Allegheny County Judge Jeffrey Manning ordered that Brewington be sent to Mayview State Hospital for no more than 90 days.

Psychiatrist Christine Martone testified that Brewington suffered from Munchausen, which is a syndrome in which a caregiver fakes or induces illness in others to generate sympathy. Martone says Brewington also has a borderline personality disorder and admits to having suicidal thoughts.