I am, personally, not completely sure there is one, but it would fall under the category of "things you do in normal life but never actually use the correct term for"
Peeling it?
Central spongy area of stem of most flowering plants. White material between peel and fruit of an orange. Used as a liner in helmet's in India, hence the term Pith Helmet.
Niacin Flush
Skin is the correct term. For a more scientific sounding term, epidermis can be used. It refers to the outermost layer of the skin.
Dermoid is the medical term meaning skin-like
Hyperpigmentation is the medical term meaning excessively darkened skin.
The medical term meaning Tb skin test is Mantoux. It's a term that refers to a skin test to check for tuburculosis.
People might complain about oranges because a certain orange annoyed them. That orange can be found by entering the term "annoying orange" on the youtube website.
Hyperpigmentation is the medical term meaning excessively darkened skin.
Acrochordon is the medical term meaning skin tag. Skin tags can occur in areas of high friction.
The medical term for bluish-black marks on the skin caused by hemorrhages into the skin is "ecchymosis."
Sub- is the prefix of the term subdermal, meaning below the skin.
To roll (a cannabis cigarette) is the meaning to the British term to skin up.