14th February 2025

A 22-year-old laboratory assistant is seen in the eating disorders clinic after being referred by her GP.

A 22-year-old laboratory assistant is seen in the eating disorders clinic after being referred by her GP. She has a BMI of 16.5 and has been using diet pills and thyroxine she bought over the internet to help her lose weight. Roughly once per week she will eat a box of doughnuts and feel so guilty afterwards that she makes herself vomit. She has frequent obsessive thoughts regarding eating too much or putting on weight.

She is reviewed by a medical student who is not sure of the diagnosis and asks the consultant for an explanation.

What is the most likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.