Diagnosis
It is often difficult to distinguish between pain caused by bursitis or that caused by a rotator cuff injury as both exhibit similar pain patterns in the front or side of the shoulder. Subacromial bursitis can be painful with resisted abduction due to the pinching of the bursa as the deltoid contracts. If the therapist performs a treatment direction test and gently applies joint traction or a caudal glide during abduction (MWM), the painful arc may reduce if the problem is bursitis or adhesive capsulitis (as this potentially increases the subacromial space).The following clinical tests, if positive, may indicate bursitis:

The patient actively abducts the arm and a painful arc occurs between 60° and 120°. This is due to the compression of the supraspinatus tendon or subacromial bursa between the anterior acromial arch and humeral head. When lowering from full abduction there is often a painful "catch" at midrange. If the patient can achieve adequate muscle relaxation, passive motion tends to be less painful. The patient performs an isometric flexion contraction against resistance of the therapist (Speed’s Test). When the therapist’s resistance is removed, a sudden jerking motion results and latent pain indicates a positive test for bursitis. Neer’s Sign: If pain occurs during forward elevation of the internally rotated arm above 90°.
Lupoid sycosis is a cutaneous condition that is characterized by a scarring form of deep folliculitis, typically affecting the beard area. See also
Sycosis barbae
List of cutaneous conditions


== References ==