M79.3: Panniculitis, unspecified

Panniculitis is a medical condition characterized by inflammation of the fatty layer beneath the skin, also known as the subcutaneous fat. The exact cause can vary, but may include infections, certain medications, or underlying conditions, such as autoimmune disorders. Symptoms typically present as tender, red nodules or lumps on the skin, often on the legs or arms. This inflammation can also cause discomfort or pain. Over time, these nodules may develop ulcerations or darken in color and, in some cases, can result in changes to the overlying skin, such as thickening or discoloration. The inflammation may also occasionally affect deeper tissues, causing further complications. While it is a relatively rare condition, it can affect individuals of any age and gender.