Diseases that can be transmitted from one person to another are termed:

The term that describes diseases that can be transmitted from one person to another is "contagious." Contagious diseases are characterized by their ability to spread quickly and easily from person to person through direct or indirect contact. This can occur via respiratory droplets, physical contact, or by touching contaminated surfaces.

Understanding the nature of contagious diseases is crucial in esthetics, as professionals must adhere to strict sanitation and safety protocols to prevent the spread of infections and protect both themselves and their clients.

While the term "infectious" is also relevant, as it broadly refers to diseases caused by pathogens like bacteria and viruses that can invade the body, it is not limited to transmission between individuals. Infectious diseases can also be spread through contaminated food, water, or vectors like insects, which distinguishes them from contagious diseases specifically.