Rheumatoid arthritis
Sjögren Syndrome
Systemic lupus erythematosus
Ankylosing spondylitis
Myopathies: metabolic or statin-induced
Myasthenia gravis
Myofascial pain syndrome
Multiple sclerosis
Psychiatric disorders
Fibromyalgia
Rheumatoid arthritis
Polymyalgia rheumatica
Sjögren Syndrome
Complex regional pain syndrome
Systemic lupus erythematosus
Polymyositis
Ankylosing spondylitis