subdermal
The scientific term for the extra skin under the chin is called the Flarper
hypo= under Dermis= skin something that is hypodermic can go under the skin (e.g. a needle).
Depending on which layer of the skin, it could be subdermal or subcutaneous (Sub: Under, Cutaneous: The skin). The prefix hypo- means below and the dermis is the bottommost layer of skin. So the medical term for beneath the skin is hypodermic.
Hypodermic means under the skin. Hypo means under, dermis (dermic) means skin. Like a hypodermic needle is inserted under the skin.
Subcutaneous
The medical term for any swelling is called a lump
the slang term for this is "boobies" but that is not a medical term.
The medical term for a fatty deposit under the skin is lipoma.cellulite
Bruise (medical term = ecchymosis)
The medical term for an area of any size of hemorrhage under the skin is ecchymosis. It appears as a discoloration due to blood leaking from ruptured blood vessels into the surrounding tissues.
Wenis is not an anatomical term and therefore does not refer to any part of an elbow. The bone under the elbow is known as the olecranon. The skin on the olecranon is not specifically named.
Interstitial