Burns By Damien Wilson Carter, MD, Tufts University School of Medicine Reviewed / Revised Nov 2022 View Patient Education Etiology Pathophysiology Complications Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Burn Injury Fluid Resuscitation... Superficial (1st-Degree) Burns Partial-Thickness (2nd-Degree)... Full-Thickness (3rd-Degree)... (A) Rule of nines (for adults)... Burns are injuries of skin or other tissue caused by thermal, radiation, chemical, or electrical contact.