Which of the following is a contagious disease commonly associated with salons?

Herpes is considered a contagious disease that can be transmitted through close personal contact, including situations commonly encountered in salons. Many salon services, such as facials or eyelash extensions, involve working near the facial area where the herpes virus can manifest as cold sores. The virus is highly contagious and can spread from person to person through direct contact, making it a concern in a salon environment where clients often come into close proximity.

In contrast, the other conditions listed, while they can affect the skin and may be seen in a salon setting, are not classified as contagious. Psoriasis is a chronic autoimmune condition that is not infectious, as it is related to the immune system rather than infectious agents. Eczema and dermatitis are terms that refer to inflammatory skin conditions that can be triggered by various factors, such as allergens or irritants, but they do not spread from person to person. Understanding the contagious nature of herpes highlights the importance of hygiene and safety precautions in salon practices.