What is true of herpes simplex 1?

• A. It causes shingle outbreaks
• B. It leads to excessive perspiration
• C. It causes fever blisters and cold sores
• D. It is associated with the dermis layer

Answer: (C)

Herpes simplex virus type 1 (HSV-1) is primarily known for causing oral herpes, which manifests as fever blisters or cold sores around the mouth and on the face. These lesions occur due to the virus's ability to establish latency in nerve cells and reactivate in response to various triggers like stress, illness, or sun exposure. This understanding of HSV-1 is crucial for estheticians, as it impacts client interactions and safe treatment practices.

The mention of HSV-1 causing shingle outbreaks is inaccurate because shingles are associated with the varicella-zoster virus, not HSV-1. Excessive perspiration does not correlate specifically with HSV-1; perspiration is more related to the body’s thermoregulation rather than viral infections. Additionally, while HSV-1 can affect skin lesions on the epidermis, it is not primarily associated with the dermis layer, which is deeper within the skin structure. Recognizing these distinctions helps in correctly identifying the characteristics and implications of herpes simplex virus type 1.