Final answer:
Excoriations are skin wounds or abrasions caused by scratching or rubbing the skin. They can occur due to various reasons such as insect bites or compulsive scratching behaviors. Excoriations are defined in sentence 285.
Step-by-step explanation:
Excoriations are skin wounds or abrasions that are caused by scratching or rubbing the skin. They can occur due to various reasons such as insect bites, skin conditions like eczema, or compulsive scratching behaviors. For example, if someone constantly scratches an itchy mosquito bite, it may lead to excoriations on the skin.
Excoriations can also be a symptom of a mental health disorder called dermatillomania, which is characterized by a persistent and compulsive urge to pick at one's skin. In this case, the individual may create excoriations on their skin by repeatedly picking or scratching at it.
The sentence(s) that define excoriations in the given list: 285.