What is a common bacterial infection of the skin?

• A. Psoriasis
• B. Impetigo
• C. Folliculitis
• D. Cellulitis

Answer: (B)

Impetigo is a common bacterial skin infection, particularly prevalent in children, that is caused primarily by Staphylococcus aureus or Streptococcus pyogenes. It often manifests as red sores or blisters that can ooze and form a crust, particularly around the nose and mouth. The infectious nature of impetigo makes it highly contagious, spreading easily through direct contact.

The other conditions mentioned, while they may involve skin issues, do not fit the definition of a bacterial infection in the same way. Psoriasis is an autoimmune condition characterized by rapid skin cell production leading to scaly patches and is not caused by a bacterial infection. Folliculitis refers to the inflammation of hair follicles, which can be caused by various factors, including bacteria, but it is a more localized condition and may not be classified as a common bacterial infection of the skin. Cellulitis involves a deeper skin layer infection leading to redness, swelling, and pain, but impetigo is more commonly recognized as a superficial bacterial infection specifically known for its distinct presentation and transmission, making it a more frequent reference point for common bacterial skin infections.