Cutaneous hypersensitivity reaction to dulaglutide: A case report of an allergic reaction

GLP-1 (glucagon-like peptide-1) receptor agonists are a class of anti-diabetic agents that act by inducing insulin secretion and inhibiting glucagon release in a glucose-dependent manner. They are particularly promising because of their long duration of action, reduced risk of hypoglycaemia and the added benefit of weight loss. Trulicity ® dulaglutide is a GLP-1 receptor agonist approved for type II diabetes and chronic weight management in obese adults.

A few rare cases of hypersensitivity reactions have been reported in patients taking the GLP-1 receptor agonists dulaglutide and liraglutide. Here we present a new case of cutaneous hypersensitivity reactions in a man taking dulaglutide for type II diabetes. A 52-year-old man who had been taking dulaglutide for 5 weeks developed a rash on the abdomen when the dose was increased for 3 months. The patient experienced resolution of symptoms within days of stopping dulaglutide.