Bacterial infections of the skin can be either superficial or affect the deeper tissues of epidermis and thus take longer to cure. Some of the most common bacterial skin infections are caused by Staphylococcus aureus and Streptococcus pyogenes. These include Impetigo and Ecthyma that cause skin redness and formation of blisters that are filled with pus and quite itchy. These mostly develop on the legs of an infected person and leave scars even after healing completely.
Folliculitis is another common type of skin infection that is caused by bacteria and results in the formation of zit like bumps around the hair follicles present in arms, upper trunk and even hips. These can be quite painful and fill with pus if you do not treat them early. Abscess is a similar form of bacterial skin infection that can be identified by the formation of a blister that later turns into a pus filled hole.