Lactose intolerance
Lamellar ichthyosis
Laryngitis
Laryngospasm
Latex allergy
Lazy eye (amblyopia)
Lead poisoning
Leading poisoning, adults
Leading poisoning, children
Leading poisoning, newborn
Left sided colitis
Left ventricular hypertrophy
Legg Calve Perthes disease
Legionnaires disease
Leukemia
Leukoplakia
Lewy body dementia
Lice
Lichen nitidus
Lichen planus
Lichen sclerosus
Limited scleroderma (CREST syndrome)
Linear scleroderma
Lipoma
Listeria infection
Livedo reticularis
Liver cancer
liver cysts
Liver hemangioma
Long QT syndrome
Low blood pressure (hypotension)
Low sperm count
Lung cancer
Lupus
Lyme disease
Lymphedema