Chris Brown's seizure was brought on by fatigue and emotional stress, according to his publicist.

Publicist Nicole Perna says the singer was working in a Los Angeles recording studio when he suffered a non-epileptic seizure Friday.

Brown's seizure was caused by the "continued onslaught of unfounded legal matters and the nonstop negativity," according to Perna.

The singer was on probation for his 2009 assault on then-girlfriend Rihanna, but was revoked after his involvement in a May 12 hit-and-run case.