Janet Bounces Back From Illness

(WireImage)

Janet Jackson's mysterious illness, which caused her to cancel or postpone six shows on her Rock Witchu tour, has finally been revealed as vestibular migraines, a rare form of headache that can cause vertigo.

The pop star first started suffering from the headaches last month, resulting in a last minute Sept. 29 show cancellation in Toronto, followed by others in Boston, Philadelphia, Greensboro, S.C., Uncasville, Conn. and Fort Lauderdale, Fla. 

"Janet wanted very much to resume her tour so as not to disappoint her fans, but she continued to suffer from vertigo and could not perform," Kenneth Crear, the singer's manager, said in a statement.

The 42-year-old superstar is planning on performing tonight in Washington, D.C., her manager said, followed by eight more concert dates.