Papa Roach [ tickets ] has added several dates to its imminent U.S. tour, and has also announced a pair of U.K. dates that will follow its stateside run. Meanwhile, Orgy [ tickets ]--who, along with Alien Ant Farm, was slated to open for Papa Roach’s U.S. outing--has canceled its tour plans due to an illness in the band.

On Sunday (3/18), Papa Roach will kick off its tour in Pensacola, Fla. U.S. dates are now lined up through an April 13 show in Boston, following which the band is scheduled to head to Europe.

Last week, Orgy guitarist Amir Derakh was diagnosed with a severe case of mononucleosis, according to Reprise Records. The illness forced Orgy to scrap its tour with Papa Roach, and to cancel the last five March dates of its headlining tour. Derakh is expected to make a full recovery, and Orgy plans to resume touring in May and June.

Southern Californian rock act Alien Ant Farm will tour with Papa Roach as previously planned.

Click here to read LiveDaily’s recent interview with Orgy guitarist Amir Derakh.