Causes of Musculoskeletal Pain Across Organ Systems

1. Muscular Causes

  • Muscle strain or overuse.
  • Myofascial pain syndrome.
  • Fibromyalgia.

2. Skeletal Causes

  • Fractures, dislocations.
  • Osteoporosis-related fractures.
  • Bone infections (osteomyelitis).

3. Joint-Related Causes

  • Arthritis: Osteoarthritis, rheumatoid arthritis.
  • Gout or pseudogout.
  • Septic arthritis.
  • Ankylosing spondylitis.

4. Neurological Causes

  • Radiculopathy: Nerve root compression (e.g., sciatica).
  • Peripheral neuropathy.
  • Complex regional pain syndrome (CRPS).

5. Infectious Causes

  • Viral myositis.
  • Lyme disease.
  • Tuberculosis affecting bones or joints.

6. Endocrine and Metabolic Causes

  • Vitamin D deficiency (osteomalacia).
  • Hyperparathyroidism: Bone pain from calcium dysregulation.
  • Hypothyroidism: Muscle cramps and stiffness.

7. Autoimmune Causes

  • Systemic lupus erythematosus (SLE).
  • Polymyalgia rheumatica.
  • Dermatomyositis or polymyositis.

8. Cancer-Related Causes

  • Bone metastases.
  • Primary bone tumors (e.g., osteosarcoma).
  • Multiple myeloma.

9. Medication or Toxin-Induced Causes

  • Statins causing myopathy.
  • Bisphosphonates causing atypical fractures.
  • Alcohol or drug-induced myopathy.

10. Miscellaneous/Systemic Causes

  • Chronic fatigue syndrome.
  • Post-viral syndrome.
  • Psychogenic pain disorders.