Unusual bacterial skin infection Unusual nail infection Unusual bacterial nail bed infection Unusual paronychia Increased susceptibility to bacterial infection of the nail bed and proximal nail fold (paronychia), as manifested by recurrent or severe episodes that are unusual in frequency or severity for a healthy individual of the same age. Principal causative agents include Staphylococcus aureus and Streptococcus species. Recurrent bacterial paronychia is a characteristic feature of phagocyte defects including leukocyte adhesion deficiency and chronic granulomatous disease. Unusual bacterial paronychia Recurrent paronychia Unusual nail fold infection