Table 4.

Involuntary musculoskeletal disorders at rest or nocturnal with sudden onset in elderly above 50

	Nocturnal leg cramps	Restless leg syndrome	Periodic Limb Movement Disorder
Pain	✓
Intensely pain	✓
From seconds to maximum 10 minutes	✓
Calf or foot, seldom thigh	✓
Persisting pain afterwards	✓
Sleep disruption	✓
Distress*	✓
Irritating, burning, crawling sensations		✓
In episodes		✓
An urge to move		✓
Reduction of symptoms by activity		✓
No pain		✓	✓
Repeating and jerking movements			✓
Duration 20-30 seconds			✓

Reduced strength of dorsiflexion of ankle, foot and toes was also found in one study and can be associated with NLC [23]

The response rate of the geriatric clinicians in the focus group of the Delphi study was 52%, all with > 50% consensus. See Table 5