TONI BRAXTON and husband KERI LEWIS at the 2005 World Music Awards held at Kodak Theater. Los Angeles, California - 31.08.05

The UNBREAK MY HEART singer and husband KERI LEWIS knew there was something wrong with their youngest child, DIEZEL, and insisted their family doctors investigate further.

Angry Braxton says, "They dismissed me. I don't know if it would have made a difference or not for him to be diagnosed earlier, but they had a 'wait and see' attitude.

"It makes me so angry because a mother knows when something is wrong with her child."

Source: WENN