Conditions We Treat

Browse Conditions A-Z

Lactose Intolerance

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Langerhan Cell Histiocytosis (LCH)

Langerhans Cell Histiocytosis (LCH) is among a rare and diverse group of disorders affecting primarily children. Although it was first described more than a century ago, much remains to be discovered about the causes of LCH.

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Large Cell Lymphoma

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Laryngomalacia

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Laryngomalacia (Laryngeal Stridor)

Laryngomalacia (LAYR inn go mah LAY shah) is also called laryngeal stridor. It results from a weakness of parts of the voice box (larynx) that is present at birth. This condition can cause a high-pitched sound called stridor (STRI der). You may hear this sound when your child breathes in.

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Latent Tuberculosis Infection (LTBI)

Tuberculosis (too ber cu LOW sis), or TB, is the common name for a germ called Mycobacterium tuberculosis. Persons with latent TB infection (LTBI) do not feel sick. They do not have any symptoms but can potentially develop active TB disease. Also, persons with LTBI are not contagious.

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Legg-Calve-Perthes Disease

Learn more about Legg-Calve-Perthes disease.

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Leukemia

Although childhood cancer is rare, leukemia is the most common form. The cause of leukemia is not known, but we do know it is not contagious (“catching”). It is not thought to be hereditary (inherited from your parents).

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Leukemia (ALL and AML)

Learn more about the most common form of pediatric cancer, leukemia. 

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Lichen Planus

Lichen planus (LIE kun PLAY nuss) is a rash that appears on the skin as shiny, flat bumps.The bumps may be clustered together in patches or dispersed (scattered far apart). They can be red or purple in color. The rash may be itchy.

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Lichen Striatus

Lichen striatus (LY kuhn stry AY tuhs) is a rash that appears as pink or lightly-colored, scaly, flat bumps. Over the following weeks, these bumps come together to form a line or band on the skin. Sometimes the rash can appear inflamed or redder, with a thicker scale.

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Limb-Girdle Muscular Dystrophy

Limb-Girdle muscular dystrophy affects males and females. Most commonly it causes progressive (worsening) hip and shoulder muscle weakness that spreads to the arms, legs, and back. Symptoms usually begin between 8 and 15 years of age, and progress slowly.

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Helping Hands Patient Education Materials

Written and illustrated by medical, nursing and allied health professionals at Nationwide Children's Hospital, Helping Hand instructions are intended as a supplement to verbal instructions provided by a medical professional. The information is periodically reviewed and revised to reflect our current practice. However, Nationwide Children's Hospital is not responsible for any consequences resulting from the use or misuse of the information in the Helping Hands.