Fever
A Headache
Fatigue
Unintended Weight loss
Night sweat
Skin Rash
Numbness or weakness
Person's genetic makeup
Immune system disorder
Hepatitis B
Hepatitis C
Blood cancer
Immune system diseases, such as rheumatoid arthritis, lupus and scleroderma
Reactions to certain drugs
Rheumatologist
Immunologist
Nephrologist
Dermatologist
Cardiovascular Surgeon
Vascular Surgeon