Recurrent Cold Sore Blister on the Lip in Adults

I’m sorry these recurring flares have been so disruptive. Thank you for the details and the photograph (not shown for privacy). The pattern you describe is most consistent with recurrent cold sores, which often present with tingling followed by grouped blisters that recur in the same location. Conditions such as angular cheilitis, which typically affects […]

Keratosis Pilaris on the Upper Arms in a Teenager

I’m glad you shared these details—thank you for the information and the photograph (not shown for privacy). The appearance and distribution are most consistent with keratosis pilaris, which often presents with dry, rough “sandpaper-like” bumps on the upper arms in teenagers. Conditions such as eczema, which typically causes itchy, inflamed patches, or folliculitis, which can […]