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Differential Duel

  1. Round 1 of 5.Diagnosis: Not answered.Distinguishing feature: Not answered.
  2. Round 2 of 5.Diagnosis: Not answered.Distinguishing feature: Not answered.
  3. Round 3 of 5.Diagnosis: Not answered.Distinguishing feature: Not answered.
  4. Round 4 of 5.Diagnosis: Not answered.Distinguishing feature: Not answered.
  5. Round 5 of 5.Diagnosis: Not answered.Distinguishing feature: Not answered.

Choose the diagnosis that best fits this presentation.

Clinical presentation

A 72-year-old man was diagnosed eight years ago with a levodopa-responsive movement disorder marked by right-hand resting tremor, rigidity, and bradykinesia, and his cognition was intact for the first six years. Over the past two years, his family has noticed gradually worsening planning, attention, and judging of distances, and he now needs help managing his medications and finances.