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Diseases and Conditions

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

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  • colleagues wear protective facemasks during a meeting at work

    Mass Psychogenic Illness

    Mass psychogenic illness is sometimes called mass hysteria. It is when a group of people starts feeling sick at the…

  • Dermatologist uses magnifying glass to examine a mole on the back of a male patient

    Squamous Cell Carcinoma

    Squamous cell carcinoma is a common form of skin cancer.

  • Woman in business clothes holding sinuses in pain

    Sinus Infection (Sinusitis)

    A sinus infection is a condition where the lining of your sinuses becomes inflamed. It can be caused by bacteria…

  • A swollen foot caused by lymphedema. Lymphedema occurs when there is excess fluid inside your body. It causes swelling in your arms, legs, fingers, and toes.

    Lymphedema

    Lymphedema is a condition often caused by cancer treatment or surgery. It results in swelling of the lymph nodes located…

  • Senior man with heat exhaustion cools his head with a wet cold cloth

    Heat Exhaustion and Heat Stroke

    Heat exhaustion and heatstroke are serious conditions. Learn the warning signs of these heat-related illnesses, as well as how to…

  • Traveler’s Diarrhea

    Traveler’s diarrhea is a common travel-related illness that anyone can get when traveling to certain areas. Most cases are mild…

  • Hand, foot, and mouth disease is a common, mild, contagious childhood illness. It causes mouth sores and a rash on the hands and feet.

    Hand, foot, and mouth disease (HFMD)

    Hand, foot, and mouth disease is a common, mild, contagious childhood illness. It causes sores inside and outside the mouth…

  • Close-up of doctors hands checking man’s skin. Skin tags are non-cancerous skin growths that feel like a hanging mole. Anyone can get them, and they are more common with age.

    Skin tags

    Skin tags are non-cancerous skin growths that feel like a hanging mole. They are more common with age.

  • Zoomed out and zoomed in view of the brain’s pituitary gland

    Pituitary Tumors

    The pituitary gland is located in your brain and produces hormones. Most pituitary tumors are non-cancerous.

  • Woman holding antacid tablet and glass of water

    Indigestion (Dyspepsia)

    Indigestion happens when your body has trouble digesting food. Anyone can get indigestion, either on occasion or as part of…

  • Hydrocodone prescription bottle

    Opioid Addiction

    An opioid addiction is a powerful urge to use opioids. These are medicines that are prescribed to relieve pain, such…

  • Menopause

    Menopause is when your menstrual periods permanently stop (12 months in a row without a period) and you can no…

  • Vibrio Vulnificus Infection

    Vibrio vulnificus is a type of bacteria found in warm seawater and contaminated shellfish. It can cause flu-like symptoms and…

  • A young boy shows a skin rash covering his chest and arms. Scarlet fever is a bacterial infection that usually affects children between the ages of 5 and 15. It can be treated with antibiotics.

    Scarlet Fever

    Scarlet fever is a bacterial infection that usually effects children between the ages of 5 and 15. It can be…

  • Smiling school children stand against a fence on the playground. Tourette syndrome is a movement disorder that causes a person to make repeated, uncontrolled twitches, movements, or sounds known as tics.

    Tourette Syndrome and Tics

    Tourette syndrome is a movement disorder that causes a person to make repeated, uncontrolled twitches, movements, or sounds. It starts…

  • A woman who suffering from PMS is lying on the sofa with her hand on her abdomen.

    Premenstrual Syndrome (PMS)

    Premenstrual syndrome (PMS) references a group of symptoms often experienced up to 14 days before menstruation (period).

  • Illustration of colon polyps removal, using a colonoscope

    Polyps

    Polyps are abnormal growths of tissue that can occur in different places including your colon, nose, ear, throat, and stomach…

  • An illustration of lung shapes drawn in different colors. Shortness of breath happens when you cannot get enough air into your lungs. Causes include asthma, lung diseases, panic attacks, or allergies.

    Shortness of Breath

    Shortness of breath happens when you cannot get enough air into your lungs. It can be caused by asthma, lung…

  • 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…

  • AIDS

    AIDS (acquired immune deficiency syndrome) is a life-threatening condition caused by human immunodeficiency virus (HIV).

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