EDDIE VAN HALEN

The rocker, who has battled cancer and substance abuse, is currently under doctors' care, and according to publicists, will "continue medical tests to define a course of treatment."

Reports suggest the Van Halen star has returned to rehab.

As a result of his medical problem, all Van Halen dates have been postponed until 19 April (08).

Fans are being asked to keep hold of their tickets for the 17 shows affected, as the band hopes to make up every concert.

Van Halen's rehab stint in 2007 stalled the start of the band's reunion tour.

Source: WENN