The causes of<unk><unk>  are incompletely understood; however, there are several factors associated with higher risk. Risk factors for secondary<unk><unk>  include injury or surgery leading to prolonged immobility. Risk factors for primary, or idiopathic<unk><unk>  include many systemic diseases, such as diabetes mellitus, stroke, lung disease, connective tissue diseases, thyroid disease, heart disease, autoimmune disease, and Dupuytren's contracture. Both type 1 diabetes and type 2 diabetes are risk factors for the condition. Primary Primary<unk><unk> , also known as idiopathic<unk><unk>  occurs with no known trigger. It is more likely to develop in the non-dominant arm. Secondary<unk><unk>  is called secondary when it develops after an injury or surgery to the<unk> .
Adhesive capsulitis of the shoulder
Biceps
Retrocalcaneal bursitis
Osteoarthritis
Shoulder impingement syndrome
Autoimmune disease
Milwaukee shoulder syndrome
Rotator cuff tear