The present invention relates to a medical device for intradermal or subcutaneous treatment of a patient, comprising: - a piercing element (12 34) to penetrate a skin portion (22) of the patient - an illumination arrangement (24 44) to illuminate the piercing element (12 34) and/or to illuminate the skin portion (22) prior and/or during a treatment process, - wherein the illumination arrangement (24 44) is further adapted to visually indicate a predefined treatment sequence of the treatment process.
