Grade 1: - 

Grade 2: - 

Grade 3: Skin sloughing covering <10% BSA with associated signs (e.g., erythema, purpura, epidermal detachment, and mucous membrane detachment)

Grade 4: Skin sloughing covering 10 - 30% BSA with associated signs (e.g., erythema, purpura, epidermal detachment and mucous membrane detachment)

Grade 5: Death

Adapted from Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0 Published: November 27, 2017