erysipeloid /er′isip″əloid/ [Gk, erhthros + pella + eidos, form] , an infection of the hands characterized by blue-red patches and occasionally by erythema. It is acquired by handling meat or fish infected with Erysipelothrix rhusiopathiae. The disease is self-limited, lasting about 3 weeks, but responds to penicillin. Also called fish-handler’s disease. Should not be confused with erysipelas.