Widespread Pain Differential Diagnoses

Autoimmune: Polymyalgia Rheumatica, Sjogren's Disease, Rheumatoid Arthritis, Connective tissue disease (autoimmune), Inflammatory myositis, Sarcoidosis, Celiac disease, Inflammatory Bowel Disease, Sarcoidosis
Genetic: Heritable Connective Tissue Disorders, Neuromuscular Diseases (e.g. Myotonic Dystrophy type 2, Pompe Disease)
Idiopathic: Fibromyalgia, Degenerative myopathies, Small Fibre Neuropathy
Primary Joint disease: Osteoarthritis
Neoplastic disease: Metastases, Multiple myeloma, Leukaemia, Lymphoma
Infections: bacterial endocarditis, hepatitis B and C
Bone disease: Osteomalacia, Osteomyelitis
Endocrine: Hypothyroidism and hyperthyroidism, Hyperparathyroidism, Acromegaly, Diabetes, Vitamin D deficiency, endocrine myopathies
Neurological: Parkinson disease, Neuropathies, Motor neurone disease, Chronic Inflammatory Demyelinating Polyneuropathy, Multiple sclerosis, Myalgias in rare disease (e.g., Stiff Person Syndrome), Myalgias with lesions of the central and peripheral nervous system
Medication: opioids, statins, aromatase inhibitors, carbimazole, ezitimibe, metoprolol, minoxidil, PPIs, salbutamol, amiodarone, colchicine, ACE inhibitors

Axial Skeleton	Neck Pain Thoracic Pain Low Back Pain Sacroiliac Pain Coccydynia
Upper Limbs	Sternoclavicular Joint Pain Shoulder Pain and Instability Elbow Pain Wrist Pain and Instability Neuropathic Arm Pain
Lower Limbs	Hip Pain Lateral Hip Pain Groin Pain Posterior Thigh Pain Buttock Pain Anterior Thigh Pain Knee Pain Calf Pain Ankle Pain Foot Pain Neuropathic Leg Pain
Other	Abdominal Wall Pain Chest Wall Pain Joint Hypermobility Vertigo Widespread Pain Anterior Throat Pain Arthritis Rheumatology Symptoms