R&B diva Janet Jackson gave fans a bit of a scare and a bit more of a frustration by cancelling a string of shows in her ongoing Rock Witchu Tour due to a mysterious illness that has now been revealed to be vertigo.

Nearly three weeks after cancelling her first show in Montreal, hours before it was scheduled to begin, after suddenly falling ill during sound check, Janet Jackson is back on her feet and on the stage.

Her publicist explained Wednesday, finally, after weeks of speculation regarding the nature of her health issues, which was never disclosed, that she had been suffering from migraine-associated vertigo and thus unable to perform.

She has not fully recovered yet, considering that she is still receiving treatment for the illness, whose symptoms include dizziness and imbalance, among others. She does feel better though, her manager, Kenneth Crear said in a press release, and determined to get on the road again and finish the tour.

As proof of this, Jackson performed Wednesday night at the Verizon Center in Washington, D.C., a two-hour show abundant in dancing, fireworks and of course, a well-rounded collection of songs picked from albums she’s released during her 20-year career.

Rock Witchu is Jackson’s first tour in seven years and kicked off Sept. 10 in Vancouver, Canada.

Eight shows have been cancelled due to her illness, in Montreal, Boston, Philadelphia, Greensboro, Atlanta, Fort Lauderdale and two more in N.Y. Before falling ill, the singer cancelled one show in Detroit in late September due to “production constraints.”

Fans have been asked to hold on to their tickets and wait for news regarding rescheduled shows.

Janet Jackson is next expected to perform in Atlanta, Houston, Dallas, New York and East Rutherford, N.J.