Which condition is a contagious bacterial skin infection characterized by weeping lesions?

Impetigo is a highly contagious bacterial skin infection most commonly seen in children, characterized by weeping lesions that can appear as red sores or blisters. These sores often ooze and can form a yellow-brown crust. The infection typically arises from bacteria such as Staphylococcus aureus or Streptococcus pyogenes, which can enter the skin through cuts, insect bites, or other breaks in the skin barrier. The presence of weeping lesions is a significant distinguishing feature, as it signifies the active exudation from the skin caused by the infection.

Folliculitis, while also a bacterial infection, specifically affects hair follicles and presents as small red bumps or pus-filled blisters, differing from the broader lesions seen in impetigo. Cellulitis involves deeper layers of skin and presents with swelling and redness but does not primarily feature weeping lesions. Psoriasis is an autoimmune condition marked by thickened, scaly patches rather than infectious lesions. Thus, impetigo correctly identifies the contagious aspect along with the presence of weeping lesions characteristic of this infection.