Isolated transient myoclonus in the elderly: an under-recognized condition?

Area of Science:

• Neurology
• Geriatrics

Background:

• Transient myoclonus without other neurological signs is rarely documented in the elderly.
• This condition may be under-reported or misdiagnosed in older adults.

Purpose of the Study:

• To describe the clinical characteristics of elderly patients presenting with isolated transient myoclonus.
• To highlight the potential prevalence and benign nature of this neurological syndrome in geriatrics.

Main Methods:

• A review of clinical and laboratory data from 11 consecutive elderly patients diagnosed with isolated transient myoclonus.
• Myoclonus was defined as acute onset tremulous movements with or without asterixis, in the absence of other neurological symptoms.

Main Results:

• Five patients had preceding infections (e.g., pneumonia, URTI).
• Myoclonus primarily affected the head, neck, and upper extremities.
• All patients recovered within 1-4 days, with some experiencing recurrences; asterixis patterns varied upon recurrence.

Conclusions:

• Isolated transient myoclonus, with or without asterixis, might be more prevalent than previously thought.
• This condition is generally benign in the elderly population.
• Recognizing this syndrome is crucial for accurate diagnosis and management in geriatric patients.