Jefferson University Hospitals


Lactose Intolerance

If you feel discomfort after eating ice cream or cheese, your body may not be digesting lactose and our specialists can properly diagnose whether you have lactose intolerance.

Landau-Kleffner Syndrome

If you suspect that your child may have Landau-Kleffner syndrome, you can trust our world-renowned neurologists to provide personalized care and treatment.

Laryngeal Papilloma

A rare condition that is caused by HPV (human papillomavirus), an infection of the throat. The typical symptom is hoarseness but occasionally the papillomas become large enough to cause airway symptoms with difficulty breathing.

Laryngopharyngeal Reflux (LPR)

Also known as silent reflux, this common problem in patients with throat complaints involves the backflow of stomach contents up the esophagus and into the throat.


A spasm of the vocal cords that can cause sudden changes in the voice and breathing.

Learning Disorders

If you feel your child has a learning disorder, turn to our experienced pediatricians who will ensure accurate diagnose and treatment.


Our expert physicians diagnose and treat leukoplakia, the chronic irritation which causes white patches on the tongue or inside of the cheek.

Li-Fraumeni Syndrome

Li-Fraumeni syndrome (LFS) is a genetic autosomal dominant cancer syndrome which increases the chances of developing breast cancer.


Lice, blood-sucking insects found on the head and other areas of the body, is a highly treatable condition.

Lichen Planus

Lichen Planus (LP) is an inflammatory condition which affects the skin, nails and mucous membranes.