Quiz Form

Question Date: 05/07/2023

Question: A 56-year-old man is evaluated for dyskinetic gait disorder. His gait is high-stepping, and he appears to strut on his toes, holding his elbows in a flexed position and his spine erect<br><br>Which of the following conditions is a likely cause of this gait disorder?

Options:

• Manganese toxicity
• Myasthenia gravis
• Parkinson disease
• Stiff person syndrome

Correct Answer: Manganese toxicity

Explaination: Manganese toxicity, which may occur as an occupational exposure for welders or due to methcathinone intoxication, may be associated with a dyskinetic walk known as the cock-walk. This dyskinetic walk is characterized by a high-stepping gait,with erect spine and flexed elbows.

Reference: Fasano A, Bloem BR. Gait disorders. Continuum (Minneap Minn). 2013 Oct;19(5 Movement Disorders):1344-82. doi: 10.1212/01.CON.0000436159.33447.69. PMID: 24092293.