| Occupational Asthma Occupational asthma is often a reversible condition, which means the symptoms may disappear when the irritants that caused the asthma are avoided. |
| Osteoarthritis Osteoarthritis, the most common form of arthritis, is a chronic, degenerative, joint disease that affects mostly middle-aged and older adults. |
| Overview of Anemia Anemia is a common blood disorder that occurs when there are fewer red blood cells than normal or there is a low concentration of hemoglobin in the blood. |
| Osteogenesis Imperfecta Osteogenesis imperfecta is also known as brittle-bone disease because it is characterized by bones that break easily without a specific cause. |
| Osteochondroma Osteochondroma is an overgrowth of cartilage and bone near the end of the bone near the growth plate. |
| Osteomyelitis Osteomyelitis is an inflammation or swelling of bone tissue that is usually the result of an infection. |
| Osteosarcoma Osteosarcoma usually affects the long bones around the knee. It occurs most often in children, adolescents, and young adults. |
| Other Dermatitis Conditions Detailed information on the different types of dermatitis, including localized scratch dermatitis, nummular dermatitis, perioral dermatitis, and stasis dermatitis |
| Other Benign Skin Growths Detailed information on benign skin growths, including dermatofibromas, dermoid cysts, freckles, keloids, keratoacanthomas, lipomas, moles (nevi), and atypical moles (dysplastic nevi) |
| Overactive Adrenal Glands/Cushing's Syndrome Detailed information on overactive adrenal glands and Cushing's syndrome, including symptoms, diagnosis, and treatment |