Symptoms include<unk>  pain and limited range of motion although these symptoms are common in many<unk>  conditions. An important symptom of<unk><unk>  is the severity of stiffness that often makes it nearly impossible to carry out simple arm movements. Pain due to frozen<unk>  is usually dull or aching and may be worse at night and with any motion. The symptoms of primary frozen<unk>  have been described as having three or four stages. Sometimes a prodromal stage is described that can be present up to three months prior to the<unk>  freezing. During this stage people describe sharp pain at end ranges of motion, achy pain at rest, and sleep disturbances. * Stage one: The "freezing" or painful stage, which may last from six weeks to nine months, and in which the patient has a slow onset of pain. As the pain worsens, the<unk>  loses motion. * Stage two: The "frozen" or<unk>  stage is marked by a slow improvement in pain but the stiffness remains. This stage generally lasts from four to twelve months. * Stage three: The "thawing" or recovery, when<unk>  motion slowly returns toward normal. This generally lasts from 5 to 26 months. Physical exam findings include restricted range of motion in all planes of movement in both active and passive range of motion. This contrasts with conditions such as<unk>  impingement syndrome or rotator cuff tendinitis in which the active range of motion is restricted but passive range of motion is normal. Some exam maneuvers of the<unk>  may be impossible due to pain.
Adhesive capsulitis of the shoulder
Biceps
Retrocalcaneal bursitis
Osteoarthritis
Shoulder impingement syndrome
Autoimmune disease
Milwaukee shoulder syndrome
Rotator cuff tear