Which condition may present with small, fluid-filled blisters?

The presence of small, fluid-filled blisters is characteristic of a herpes simplex virus infection. This viral condition typically leads to the formation of vesicles, which are small blisters filled with clear fluid. These blisters often appear on or around the lips, mouth, or genitals and may be painful or itchy.

In contrast, psoriasis is characterized by thick, red patches covered with silvery scales and does not produce fluid-filled blisters. Seborrheic dermatitis usually results in scaly patches and redness, primarily affecting oily areas of the body, and does not involve vesicular lesions. Acne vulgaris typically manifests as comedones, papules, pustules, and cysts, but does not lead to the formation of clear, fluid-filled blisters. This distinction is key in identifying and understanding the symptoms associated with herpes simplex virus infections.