Solange Knowles has revealed that she is suffering from Attention Deficit Disorder but says the symptoms seem to be suffered by everyone in the music industry.

Solange says she didn't believe the diagnosis at first and went to a second doctor for treatment.

ADD sufferers have shortened attention spans and experience difficulty concentrating for long periods of time.

She told the NME: "I was diagnosed with ADD twice. I didn't believe the first doctor who told me and I had a whole theory that ADD was just something they invented to make you pay for medicine.

"But then the second doctor told me I had it. I was in denial. I don't understand exactly what it is.

“The symptoms seem to apply to everyone around me in the industry. Loss of memory, starting something and not finishing it."