Table 1. Differential Diagnosis of Shoulder Pain.

Referred pain
Neck	Mechanical neck pain
	Cervical spondylosis
	Brachialgia
Intra-abdominal	Liver disease
	Splenomegaly
	Perforated bowel
Pulmonary	Apical lung cancer
	Pulmonary oedema
	Pulmonary embolus
Diaphragmatic	Phrenic nerve palsy
	Pleural plaques
Cardiovascular	Stroke
	Acute coronary syndrome (typically left sided)
Systemic disease	Malignancy (primary /secondary)
	Infection (septic arthritis, Tuberculosis)
Inflammatory rheumatic diseases	Polymyalgia rheumatica
	Rheumatoid arthritis
	Psoriatic arthritis
	Crystal arthritis
Articular pathology	Osteoarthritis of gleno-humeral joint
	Osteoarthritis of acromio-clavicular joint
	Milwaukee shoulder
Bone pathology	Tumour (primary or secondary)
	Avascular necrosis
	Paget’s disease
	Fracture
Soft tissue local pathology	Rotator cuff tendinopathy /Impingement syndrome
	Biceps tendinopathy
	Adhesive capsulitis
	Calcific tendinitis
	Sub-acromial bursitis
	Shoulder instability
	Labral tears
Pain syndromes	Fibromyalgia syndrome
	Shoulder-hand syndrome