What are the most common symtoms of a skin infection?

Depends on bug and: Location of infection. In general bacterial infections cause pus forming lesions, e.g., boils, cellulitis, skin abscess, infection of burns and other skin disease sites. Other lesions are impetigo, scalded skin, paronychia etc. Special cases include, anthrax, tuberculosis, entry lesions of plague and lyme disease; syphilis, and leprosy. Fungal skin infection cause ring worm, athletes foot, etc.