Dillin L, Hoaglund F T, Scheck M
J Bone Joint Surg Am. 1985 Jul;67(6):878-80.
Brachial neuritis is an unusual syndrome of unknown etiology that can be confused with other causes of pain or weakness, or both, of the shoulder and arm. It is important to distinguish this disorder because of its dramatic symptoms and relatively good prognosis. Sharp pain, usually in the elbow or shoulder, marks the onset of brachial neuritis, but is relatively short-lived. Weakness generally occurs as the pain is subsiding and most frequently involves the deltoid, spinati, serratus anterior, biceps, and triceps. Paresthesias, atrophy, and sensory loss are inconstant features. Electromyographic findings of fibrillation potentials and positive waves characteristically are found in a pattern indicating combined nerve-root and peripheral nerve involvement. Electromyography more frequently than clinical examination shows that the lesion is bilateral, and also is of both diagnostic and prognostic value. Other laboratory studies serve only to exclude other causes of shoulder pain. The clinical course is variable, but in 90 per cent of patients complete recovery occurs within three years. Recurrences are uncommon.
臂丛神经炎是一种病因不明的罕见综合征，可与导致肩部和手臂疼痛或无力或两者兼具的其他病因相混淆。鉴于其显著的症状和相对良好的预后，区分这种疾病很重要。臂丛神经炎起病时通常表现为肘部或肩部剧痛，但持续时间相对较短。无力一般在疼痛消退时出现，最常累及三角肌、冈上肌、冈下肌、前锯肌、肱二头肌和肱三头肌。感觉异常、肌肉萎缩和感觉丧失并非恒定症状。肌电图检查典型表现为纤颤电位和正波，提示神经根和周围神经合并受累。肌电图比临床检查更常显示病变为双侧性，且具有诊断和预后价值。其他实验室检查仅用于排除肩部疼痛的其他病因。临床病程不一，但90%的患者在三年内可完全康复。复发并不常见。
