Diseases and Conditions

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

Filter By Alphabet
All conditions that start with the letter I
  • Idiopathic Thrombocytopenic Purpura (ITP)

    Idiopathic thrombocytopenic purpura (ITP) is a bleeding disorder. When you have ITP, your immune system destroys the platelets in your…

  • Indigestion (Dyspepsia)

    It can be common to have trouble digesting food. You can have various symptoms with indigestion, such as stomach pain,…

  • Infant Jaundice

    Infant jaundice is when a newborn baby’s skin, eyes, and mouth turn a yellow color. It is common and usually…

  • Infertility

    Infertility is a disease that makes it hard for a woman to become pregnant. Infertility is a disease that affects…

  • Inflammatory Bowel Disease (IBD)

    Inflammatory bowel disease (IBD) is the name of a group of disorders that cause the intestines to become inflamed (red…

  • Ingrown Toenails

    An ingrown toenail occurs when a part of your nail grows and cuts into your skin. Learn how to treat…

  • Inhalant Abuse

    Inhalant abuse is a form of substance abuse that involves breathing in or sniffing common household products to get…

  • Insect-Borne Diseases

    Insect-borne diseases are viral and bacterial illnesses from insect (bug) bites, most commonly those bites from mosquitoes, sand flies, ticks,…

  • Insomnia

    Insomnia is a common sleep disorder. People with insomnia have trouble falling asleep, staying asleep, or both. It can affect…

  • Insulin Resistance

    Insulin resistance is a condition that can lead to pre-diabetes and type 2 diabetes. Diet and lifestyle changes and prescription…

  • Interstitial Cystitis

    Interstitial cystitis is a medical condition. It represents chronic bladder inflammation.

  • Interstitial Nephritis

    Interstitial nephritis is a kidney disorder. It makes the kidney not work properly. It happens when spaces between small tubes…

  • Intertrigo

    Intertrigo is a rash that usually affects the folds of the skin, where the skin rubs together or where it…

  • Intoeing

    Learn about the causes, treatment and complications of intoeing, a condition that causes a child’s feet to point inward.

  • Intrauterine Growth Restriction

    Intrauterine growth restriction (IUGR) is a term that describes an unborn baby who isn’t growing at the normal rate inside…

  • Intussusception

    Intussusception is medical emergency when one part of the intestine slides into another section. This causes a serious blockage.

  • Irritable Bowel Syndrome (IBS)

    Irritable bowel syndrome (IBS) is a group of symptoms that affect your large intestine. Common symptoms are pain, bloating, gas,…