As people usually ignore the cause of their daytime impairments, PLMS during sleep are mostly found through laboratory examination rather than clinical complaints.Video-Polysomnography may be recommended to distinguish PLMS from other leg movements during sleep time which may be similar to PLMS when it comes to duration and pattern. Measures from PSG allocated to the diagnostic of PLMD are essentially based on electromyography (EMG) measuring muscle activity. EMG electrodes are usually placed on anterior tibialis muscle.Recent studies showed actigraphy may be combined to PSG as a screening tool for PLMD diagnosis. Actigraphs are watch-shaped devices - usually worn by adult population on the wrist - used to record sleep and wake periods for at least a week. Recent actigraphy devices allow more precise recordings which helps evaluating if actual movements meet diagnostic criteria for PLMD. Recent studies showed actigraph records reflect quite accurately PLMI criterion.Crucial for the diagnosis are the inter-movement intervals and the frequency of PLMS - each movement must happen within a 4 to 90 second interval from the previous movement. The periodic limb movement index (PLMI), which corresponds to the number of periodic limb movements per hour, must be more than 15 movements per hour in adults and 5 movements or more per hour in children.
Trigger finger, also known as stenosing tenosynovitis, is  a disorder characterized by catching or locking of the involved finger in full or near full flexion, typically with force. There may be tenderness in the palm of the hand near the last skin crease (distal palmar crease). The name "trigger finger" may refer to the motion of "catching" like a trigger on a gun. The ring finger and thumb are most commonly affected.The problem is generally idiopathic (no known cause). There may be an association with diabetes. The pathophysiology is enlargement of the flexor tendon and the A1 pulley of the tendon sheath. While often referred to as a type of stenosing tenosynovitis (which implies inflammation) the pathology is mucoid degeneration. Mucoid degeneration is when fibrous tissue such as tendon has less organized collagen, more abundant extra-cellular matrix, and changes in the cells (fibrocytes) to act and look more like cartilage cells (chondroid metaplasia). Diagnosis is typically based on symptoms and signs after excluding other possible causes.Trigger digits can resolve without treatment. Treatment options that are disease modifying include steroid injections and surgery. Splinting immobilization of the finger may or may not be disease modifying. Signs and symptoms
Symptoms include catching or locking of the involved finger when it is forcefully flexed. There may be tenderness in the palm of the hand near the last skin crease (distal palmar crease). Often a nodule can be felt in this area. There is some evidence that idiopathic trigger finger behaves differently in people with diabetes.