MRCP2-3541

MRCP2-3541

A 50-year-old female presents with bilateral tingling sensation in her medial one and half digits at night, along with clawing of her 4th and 5th digits. She is concerned about the cosmetic aspect of her condition. Additionally, she has been experiencing left-sided foot drop for the past 8 months. Her medical history includes type 2 diabetes mellitus, for which she takes metformin 850mg TDS, but admits to occasional poor compliance. Her last HbA1c was 53 mmol/mol. She has had multiple surgeries on her feet during childhood, but does not remember the details. She was adopted and has no knowledge of her birth family history. On examination, she has a left common peroneal palsy, thin calves bilaterally, and loss of sensation in bilateral ulnar nerve territories. What is the underlying diagnosis for her symptoms of paraesthesia and foot drop?