Eddie Van Halen undergoing medical tests

LOS ANGELES (Reuters) - Rock guitarist Eddie Van Halen is undergoing tests for an undisclosed medical problem, causing his band Van Halen to reschedule four upcoming U.S. concerts, a spokesman for the tour promoter said on Monday.

Van Halen has fought cancer and alcohol in the past but a statement released by Live Nation made no mention of his current problem.

"According to Eddie Van Halen's physician, he is undergoing a battery of comprehensive medical tests to determine a defined diagnosis and recommended medical procedures," the statement said.

A company spokesman said there was no further information on the guitarist's condition beyond the statement.

Van Halen, 53, co-founded the group that bears his name with his brother, drummer Alex, and played guitar and keyboards. Van Halen had a string of hits including "Runnin' with the Devil" and "Panama" starting in the late 1970s.

In August the group unveiled plans for a 25-city North American tour that began in September 2007 and has continued since then.

Live Nation said Van Halen's condition caused the band to reschedule concerts in Dallas, Cincinnati, Baltimore and Raleigh, North Carolina. Those shows were scheduled to take place early this month and have been put off until April.

In the 1990s, Eddie Van Halen had hip replacement surgery and was treated for oral cancer. He also has battled alcohol abuse with a stint in rehab and recently was divorced from actress Valerie Bertinelli.

(Editing by Dan Whitcomb and Bill Trott)