Injectable Diphenhydramine Used as Anaesthetic for Wide Local Excision With Flap Closure.

Background: Lidocaine-allergic patients pose a challenge for cutaneous surgical procedures. We present a case of a successful wide local excision with flap closures on the face using topical tetracaine followed by infiltration with 1% diphenhydramine.

Case Summary: An 84-year-old woman, with a lidocaine intolerance, presented to the Mohs surgery clinic for wide local excision of a nodular basal cell carcinoma on her right medial cheek.