Toxic epidermal necrolysis is the deterioration of Stevens-Johnson Syndrome, resulting in extensive skin, mucous membranes damage and influences of many organs. It is majorly caused by the drug allergies. This article described a 62-year-old woman who took medicine for flu but subsequently developed a toxic epidermal necrolysis due to drug allergy, resulting in life crisis, impaired skin integrity, and acute pain. The author is a nurse practitioner in the medical intensive care unit clinically working with the physicians to provide ICU patients with continuous and integrated medical care. Glutamine could help the repairment of skin has been fund in the evidence-based literature. After discussing with the medical teams, patients, and families, Glutamine Therapy and Aquacel Ag dressings for wound care were applied to this patient. Then, the pain scores and range of skin damage were greatly reduced, from 30% to less than 10%, and without any sign of infection. During the care process, the author paid intensive attention to the physiological changes of patients and used professional knowledge to provide direct care for improving the patient’s symptoms. The author also actively cared, listened, and provided sufficient psychological support to the patient, and noticed any psychological changes of patient. The author also established a good relationship with the patient. The author expects that this ICU nursing care experience can provide a reference to relevant clinical care