What characterizes pain during Stage III impingement?

Stage III impingement, often associated with rotator cuff lesions and significant degeneration of the shoulder structures, is characterized by more severe symptoms compared to the earlier stages of impingement. One of the hallmark signs of this stage is the presence of resting pain and night pain. This indicates that the condition has progressed to a point where the inflammation and damage to the tissues become more pronounced, leading to discomfort that persists even when the individual is not engaging in activities. Individuals may find it difficult to sleep due to pain, which is a significant shift from earlier stages where pain typically occurred only with activity.

In contrast, mild pain during activity, weakness during overhead activities, or the absence of pain do not accurately represent the severity and characteristics of Stage III impingement. The presence of pain at rest and while lying down is a critical clinical sign that distinguishes this stage from the earlier stages, emphasizing a need for more aggressive intervention and management.