If the blisters are reddish bumps with yellowish centers then these may be acne or folliculitis. Folliculitis refers to a bacterial skin infection that involves hair follicles. They may appear as reddish bumps that may be tender or painful. They are also contagious.
If you shave frequently, then this increases the risk of acquiring folliculitis. Cuts on the skin may facilitate bacterial infection. Acne is a likely differential here. Other skin conditions we need to rule out are fungal infections and dermatitis. These conditions however may present with a patch of redness ,itchiness and scaling.
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