Infection

Whipple's disease is a bacterial infection attacking the intestines. Along with intermittent joint pain, you may experience vision problems, facial numbness and a chronic cough. Whipple's disease is cured with antibiotics, but joint pain can be a problem for years before the disease is diagnosed.

Sjogren's Syndrome

Sjogren's Syndrome is an inflammatory disease and is sometimes seen as a complication of other immune disorders. It usually affects the mouth, salivary glands and eyes, but can also cause joint pain.

Behcet's Disease

Behcet's disease inflames blood vessels and is a leading cause of blindness in Japan. It causes joint pain and attacks the brain and brain stem. Other symptoms of Behcet's disease are headaches, personality changes and strokes.

Frozen Shoulder

Diabetics may develop frozen shoulder from ligament and tendon inflammation. Physical therapy and anti-inflammatory medications can restore range of motion within a year, but frozen shoulder may improve within 18 to 24 months without treatment.

Malnutrition

Vitamin B12 deficiencies associated with weight-loss surgery or Crohn's disease can trigger joint pain, along with generalized body pain. Vitamin supplements and dietary changes can ease joint pain.

Source:

National INstutes of Health, Whipple's disease

Rheumatoloby.org, Sjogren's Syndrome

The Johns Hopkins Vasculitis Center, Behcet's Disease

Resource:

National Institues of Health, Frozen Shoulder

National Institutes of Health, Crohn's disease

Natonal Institues of Health, Bariatric Surgery