Hypodermic refers to tiny fat particles in the human body, usually found between the lower layers of skin and muscle tissue. These fat particles are usually small but numerous and can be found during X-rays and ultrasounds. Although they usually don't cause pain or affect your health, in some cases, subcutaneous fingers can be a sign of a disease, such as multiple sclerosis or hyperthyroidism.

Subcutaneous digits are a pathological manifestation and have become one of the important indicators for the diagnosis of rheumatoid arthritis. Studies have shown that subcutaneous digits are related to rheumatoid factor and rheumatoid synovitis, which are caused by the pathological process of rheumatism. Subcutaneous finger detection can be used for early screening and prognostic assessment of rheumatoid arthritis.

Hypodermic fingers are also used in the beauty industry. Subcutaneous fingerling is considered a minor medical procedure associated with reducing wrinkles and improving facial contours. This procedure injects the doctor's own fat into the subcutaneous tissue to fill facial depressions and improve skin quality. Subcutaneous finger surgery is regarded as a relatively safe and effective plastic surgery, but it also has potential side effects, such as infection and tissue necrosis.