Condition Library
Conditions starting with O
28 health topics beginning with the letter O.
- ObesityRead about the causes of obesity and find out what you can do to decrease your risk of its associated health issues.
- Obesity in ChildrenObesity in children is hard to spot because they all grow at different rates. Find a list of tips that can help you monitor your child's health.
- Obsessive-Compulsive DisorderPeople with obsessive-compulsive disorder (OCD) suffer from frequent, upsetting thoughts called obsessions. Read about the treatments available.
- Occupational HealthOccupational health problems vary from broken bones to vision problems. Take the following precautions to ensure safety on the job.
- Occupational Health for Health Care ProvidersHealthcare workers are exposed to many hazards. Ensure that you have an occupational health plan for your healthcare providers with following tips.
- Oil SpillsRead about the environmental and economic effects of oil spills.
- Older Adult HealthOlder adult health deals with changes as we age. Having a healthy lifestyle helps you deal with changes in your body and mind to make the most of life.
- Older Adult Mental HealthOlder adult mental health includes emotional, psychological, and social well-being as we age. It affects how we think, feel, and act as we cope with life and aging. Learn more.
- Opioid OverdoseOpioid overdose leads to slowing or stopping of breathing and sometimes death. You can take steps to help prevent an overdose, and respond to one with naloxone.
- Opioid Use Disorder (OUD) TreatmentOpioid use disorder (OUD) is a serious problem. Treatments include medications for opioid use disorder (MOUD) and counseling.
- Opioids and Opioid Use Disorder (OUD)Opioid use disorder (OUD) a serious public health problem in the U.S. Learn about opioids, how they affect the body, and what OUD is.
- Optic Nerve DisordersYour optic nerves carries visual images from the back of your eye to your brain. Learn about optic nerve disorders and how they affect your vision.
- Oral CancerOral cancer can form in the mouth or throat but usually begins in the tongue and floor of the mouth. Read about the common oral cancer symptoms.
- Organ DonationExperts say that the organs from one donor can save or help as many as 50 people. Read about the how to become an organ donor.
- Organ TransplantationWhen you have an organ transplant, doctors remove an organ from another person and place it in your body. Read about the common organ transplants.
- OrthodontiaOrthodontia is the branch of dentistry that uses treatments such as braces, aligners, and retainers to straighten your teeth and correct your bite. Learn more.
- OsteoarthritisOsteoarthritis is the most common form of arthritis. It usually affects your hands, knees, hips, or spine. Learn about treatment and management.
- Osteogenesis ImperfectaOsteogenesis imperfecta (OI) is a genetic disorder in which bones break easily. Find out diagnosis, treatments, and living with OI.
- OsteonecrosisOsteonecrosis (Avascular Necrosis) is marked by a loss of blood supply to the bones, causing bone to break down faster than the body make new bone.
- OsteoporosisOsteoporosis is a disease that weakens your bones and makes them more likely to break or fracture. There are no symptoms until the first bone break.
- OstomyAn ostomy treats certain diseases of the digestive or urinary systems. Learn about different types of ostomy including colostomy and ileostomy
- Ovarian CancerOvarian cancer is a cancerous tumor that forms in the tissues of an ovary. The ovaries are a pair of female reproductive glands that make eggs and female hormones.
- Ovarian CystsAn ovarian cyst is a fluid-filled sac in or on the ovary. Most women have them sometime in their lives. Cysts are rarely cancerous in women under 50.
- Ovarian DisordersOvarian disorders that affect women's health include cancer, cysts, polycystic ovary syndrome, and ovarian torsion. Learn more about ovarian health.
- Over-the-Counter MedicinesOver-the-counter medicines differ from prescription medicines but offer the same benefits. Find out how to use them properly.
- Overactive BladderAn overactive bladder (or polyuria) will cause you to urinate 8 or more times a day or 2 or more times a night. Read about the treatment available
- Oxygen TherapyOxygen therapy is a treatment that provides extra oxygen. A different kind of oxygen therapy is called hyperbaric oxygen therapy. Find out more.
- OzoneOzone is a gas that can be good or bad. Good ozone is 10-30 miles above Earth's surface while bad ozone is at ground level. Read more about both.
Source: MedlinePlus.gov, U.S. National Library of Medicine.