Last updated on:August 20th, 2021
A 48-year-old man presents with the inability to extend his left foot since yesterday. He has had worsening pain over the dorsum of his left foot and anterior left leg (inferior to the knee), for the past five weeks; and intermittent discomfort and paresthesia over the same region for the past five years. He had not sought medical attention for this. There is no history of recent or old trauma to the affected region. He has been in good health otherwise, with unremarkable medical and surgical histories. He took acetaminophen (paracetamol) for the pain; he is not on any other medications or supplements. His family history is unremarkable. He only drinks socially—about 1 to 2 standard drinks per week. He does not smoke or use recreational drugs.