Parsonage-Turner syndrome


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neu·ral·gic a·my·ot·ro·phy

a neurologic disorder, of unknown cause, characterized by the sudden onset of severe pain, usually about the shoulder and often beginning at night, soon followed by weakness and wasting of various forequarter muscles, particularly shoulder girdle muscles; both sporadic and familial in occurrence with the former much more common; often preceded by some antecedent event, such as an upper respiratory infection, hospitalization, vaccination, or nonspecific trauma; usually attributed to a brachial plexus lesion, because the nerve fibers involved are most often derived from the upper trunk.

Parsonage-Turner syndrome

shoulder girdle syndrome

A condition evoked by upregulation of the sympathetic nervous system.
 
Aetiology
Contusions, fractures, neurovascular injuries.
 
Clinical findings
Acute searing pain, marked muscle-weakness, vasomotor lability, oedema, osteoporosis and, with time, wasting of the shoulder girdle and upper arm.
 
DiffDx
• Acute phase—Frozen shoulder, calcific tendonitis or arthritis.
• Chronic phase—Rotator cuff tears, nerve root compression.
References in periodicals archive ?
In developing countries, cases describing neurologic involvement during acute HEV infection have also been reported (6,7): most concerned Guillain-Barre syndrome (GBS) and Parsonage-Turner syndrome (PTS).
Discuss Parsonage-Turner syndrome occurring in immunocompetent patients infected with hepatitis E virus.
In 2013, Duffee woke up with pains and numbness in his arm and was diagnosed with Parsonage-Turner Syndrome, a rare condition that causes severe shoulder and arm pain followed possibly by numbness and paralysis.
From post-dural puncture headache (not an uncommon pain syndrome where I practise) to Parsonage-Turner Syndrome (brachial neuritis) to fibulocalcaneal pain syndrome (sprained ankle), most structures that could give rise to pain as a result of degeneration or over-use are mentioned.