The doctor told me to apply medicine on the wound.
Tips
usage
敷 is used for applying substances to skin: 敷面膜 (apply a face mask), 敷药 (apply medicine), 敷冰 (apply ice). It implies laying something flat on a surface.
mistakes
Don't confuse 敷 (fū, apply to skin) with 涂 (tú, smear/paint). 敷 is for patches and compresses laid on; 涂 is for rubbing/smearing creams or paint.