Hair follicles are openings with very small pouches in which hair grows and sebum is produced. Folliculitis could be caused by a bacterial, fungal, or parasitic infection. The symptoms of folliculitis ...
A rheumatoid factor (RF) test is a blood test that can help diagnose rheumatoid arthritis (RA). The test measures the amount of rheumatoid factor in your blood. Rheumatoid factor is an autoantibody ...