Though more than 100 types of arthritis exist, two are most familiar: osteoarthritis and rheumatoid arthritis. Rheumatoid arthritis is a systemic autoimmune disease. Osteoarthritis, on the other hand, is often referred to as a “wear-and-tear” disease. Because of the repetitive nature of their work, nail techs are at risk to develop this form of arthritis over the course of their careers.