case_images: PMC10134185_01
case_images: Bilateral necrotic facial rash with involvement of the neck and the clavicle with
  underlying erythema.
case_images: 10.1177_23247096231168114-fig1.jpg
case_images: PMC10134185_01_10.1177_23247096231168114-fig1.jpg
case_images: fig1-23247096231168114
case_images: Six days after starting immunotherapy, the patient presented to the hospital with a new-onset facial rash and associated pain (Figure 1-3).
case_images: Planning CT scan showing upper and lip in Axial view. The planning CT images show
  contouring which corresponds to different radiation dose levels.. Figure 2. Planning CT scan showing lower lip in Axial view. The planning
  CT images show contouring which corresponds to different radiation dose levels.
case_images: 10.1177_23247096231168114-fig2.jpg
case_images: PMC10134185_01_10.1177_23247096231168114-fig2.jpg
case_images: fig2-23247096231168114
case_images: Six days after starting immunotherapy, the patient presented to the hospital with a new-onset facial rash and associated pain (Figure 1-3).
case_images: Dosimetry image showing dose distribution of radiation therapy at 1.2 cm depth
  (500-7000 cGy).
case_images: 10.1177_23247096231168114-fig3.jpg
case_images: PMC10134185_01_10.1177_23247096231168114-fig3.jpg
case_images: fig3-23247096231168114
case_images: Six days after starting immunotherapy, the patient presented to the hospital with a new-onset facial rash and associated pain (Figure 1-3).
case_images: Timeline of events from the patient's initial presentation to the hospital to the
  development of the bilateral facial rash.
case_images: 10.1177_23247096231168114-fig4.jpg
case_images: PMC10134185_01_10.1177_23247096231168114-fig4.jpg
case_images: fig4-23247096231168114
case_images: A timeline of our patient's clinical course from initial presentation to diagnosis is shown in Figure 4.