 [ Symptoms ] what is the on off effect with parkinson is disease [ Disease ] unfortunately almost a third of all diabetics may be more prone to certain types of fungal infections candidiasis or oral thrush many diabetics are also at a greater risk for secondary bacterial infections such as folliculitis infection of the hair follicles carbuncles deep soft tissue infections and paronychia infections around the nail bed many of these infections may present initially as a rash therefore any suspected rash on a diabetic should be evaluated by your physician