Diseases and Conditions

Find doctor-approved information about symptoms, causes, diagnosis, treatment and prevention of common diseases and conditions.

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  • older woman sits on bed with her hand on her hip in pain

    Osteoarthritis

    Arthritis is swelling of the joints. It’s painful and can limit your movement. There are many kinds of arthritis. Osteoarthritis…

  • Osteochondritis Dissecans

    Osteochondritis dissecans is a joint problem. It occurs when an area of bone under a piece of cartilage in the…

  • Osteopenia

    Osteopenia is a condition that begins as you lose bone mass and your bones get weaker.

  • Osteoporosis

    Osteoporosis is a disease of the bones and often occurs in older women.

  • Osteosarcoma

    Osteosarcoma is a bone cancer that most often affects people between the ages of 10 and 20. It usually begins…

  • Swimmer’s ear, also known as otitis externa, is an irritation, swelling or infection in your ear. It can be caused by bacteria and fungus.

    Otitis Externa (Swimmer's Ear)

    Swimmer’s ear, also known as otitis externa, is an irritation, swelling or infection in your ear. It can be caused…

  • doctor examining the ear of a young smiling girl

    Otitis Media (with Effusion)

    Otitis media with effusion means there is fluid in the middle ear. It is common in young children and usually…

  • Ovarian Cancer

    Ovarian cancer is cancer in one or both ovaries. Ovaries are small organs located on each side of a women’s…

  • Ovarian Cyst

    An ovarian cyst is a fluid-filled sac in or on a person’s ovary. It is very common. Many times, these…

  • Two young women chatting in a coffee shop

    Overactive Bladder

    Overactive bladder is a condition that causes you to lose control of your bladder without warning.

  • A crying elderly woman with cancer is comforted by a caretaker. Pancreatic cancer is an abnormal growth of cells in the pancreas. It is difficult to detect early, making treatment tough at later stages.

    Pancreatic Cancer

    What is pancreatic cancer? Pancreatic cancer is a disease in which cancer cells form on your pancreas. Your pancreas is an organ. It is located behind your stomach and in front of your spine. It produces juices that break down food and control blood…

  • Doctor wearing blue medical gloves holds a model pancreas. What causes pancreatitis?

    Pancreatitis - What causes pancreatitis?

    Pancreatitis is inflammation (swelling) of your pancreas. The pancreas is a gland near your stomach and liver. It makes digestive…

  • A young businessman having a panic attack in an office. Panic disorder is a condition in which a person has sudden episodes of intense fear or anxiety. These episodes are known as panic attacks.

    Panic Disorder and Panic Attacks

    Panic disorder is a condition in which a person has episodes of intense fear or anxiety that occur suddenly, often…

  • Paraphimosis is a serious condition where the foreskin gets stuck behind the head of the penis and can’t be pulled back into normal position.

    Paraphimosis

    Paraphimosis is a serious condition that happens when the foreskin gets stuck behind the head of the penis and can’t…

  • close-up of an elderly man’s hands on top of a cane with a caregiver’s hand on top

    Parkinson’s Disease

    Parkinson’s disease is a movement disorder that affects the nervous system and causes tremors, slowed movements and stiff muscles.

  • A child’s hand with red and swollen skin around fingernail caused by a skin infection. Paronychia is a skin infection around the nails. It usually affects the skin at the base (cuticle) or up the sides of the nail.

    Paronychia

    Paronychia is a skin infection around the fingernails or toenails. It usually isn’t serious and can be treated at…

  • Patellofemoral Pain Syndrome

    Patellofemoral pain is a knee condition. It’s most common in people who participate in high-impact activities that include jumping and…

  • Pelvic Floor Disorders

    Pelvic floor disorders happen when the muscles in your pelvic floor weaken. It can cause constipation, painful urination and organ…

  • close up of a woman holding her abdomen in discomfort

    Pelvic Inflammatory Disease

    Pelvic inflammatory disease is an infection of female reproductive organs. It can make it hard to get pregnant and cause…

  • Man holding his stomach in pain

    Peptic Ulcer Disease

    A peptic ulcer is a raw area in the stomach or near the top of the small intestine. The lining…

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