Shoulder injuries can be either acute or chronic depending on when they are
diagnosed and how long the pain or disability has been felt for.
An acute shoulder injury occurs suddenly either through direct impact, over stretching a muscle, tendon or ligament, overusing a muscle or tendon or twisting of the shoulder joint. Massage therapy is not used to treat any acute shoulder injuries.
A chronic shoulder injury may come on gradually over time. Gradual onset shoulder pain or chronic shoulder pain may come on over a period of time. The person may not have known the exact time of injury which could have been niggling away for a while as they train through it. Due to the complexity of the shoulder joint there are some injuries which may appear to have happened suddenly but also may develop gradually over time. A chronic shoulder injury may also be acutely painful. Most common chronic shoulder pain causes that can be treated successfully
with massage are:
Rotator cuff tendonitis
Subacromial bursitis (5-7days after onset)
Shoulder Tendonitis (not during acute phase)
Clavicle muscle attachment inflammation