Diseases and Conditions

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

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All conditions in Kids and Teens
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  • Doctor examines knee of teenage boy seated on examination bed. Osgood-Schlatter disease causes swelling and knee pain. It can be caused by pulled or overused muscles around one or both knees.

    Osgood-Schlatter Disease

    Osgood-Schlatter disease is one of the most common causes of knee pain in young children and athletes. It can affect…

  • 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…

  • 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…

  • Pica

    Pica is a compulsive eating disorder in which people eat nonfood items. Dirt, clay, and flaking paint are the most…

  • Pinworm Infection

    Pinworm infection is an intestinal infection caused by small, white worms. Anyone can get it, but it’s most common in…

  • Pityriasis Rosea

    Learn about the symptoms and causes of pityriasis rosea, and how it is diagnosed and treated.

  • An illustration of a typical ovary

    Polycystic Ovary Syndrome

    olycystic ovary syndrome (PCOS) is a condition that occurs when cysts form on a woman’s ovaries.

  • 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).

  • Reye’s Syndrome

    Reye’s syndrome is a rare but serious illness common in children recovering from a virus and taking aspirin. It can…

  • A young boy has his throat swabbed by a doctor. Rheumatic fever is a rare inflammatory disease. It’s tied to the bacteria that causes strep throat and scarlet fever.

    Rheumatic Fever

    Rheumatic fever is a rare disease. It usually doesn’t happen in the United States. It’s tied to the bacteria that…

  • A baby lays on a blue blanket with his legs and feet visible. Rickets is a rare disorder that affects the bones, causing them to soften and break easily. It is most common in children.

    Rickets

    Rickets is a rare disorder that affects children’s bones, causing them to soften and break easily.

  • 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…

  • Pediatrician examining little girl with back problems.

    Scoliosis

    Scoliosis is an abnormal curve of the spine (backbone). Normally, the spine is straight. With scoliosis, the spine is crooked…

  • Preschool boy plays on a tire swing, leaning back as far as he can. Sensory processing disorder (SPD) is a condition that affects how your brain processes sensory information (stimuli).

    Sensory Processing Disorder (SPD)

    Sensory processing disorder (SPD) is a condition that affects how your brain processes sensory information (stimuli).

  • Sever's Disease

    Sever’s disease is a common heel injury that occurs in children. It is painful and caused by swelling of the…

  • Sleepwalking

    Learn about the causes of and ways to deal with sleepwalking.

  • Slipped Capital Femoral Epiphysis

    Slipped capital femoral epiphysis is a hip problem that occurs in children when the end of the thigh bone slips…

  • Woman touching her throat because it is sore

    Sore Throat

    A sore throat can feel irritated or scratchy with mild to burning pain. Most sore throats are caused by viruses,…

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