Lobar intracerebral hemorrhage
Legionellosis
Loa loa filariasis
Lyme disease
Lymphedema
Lung cancer
Leprosy
Lactose intolerance
Low vision
Lateral medullary syndrome
Leukocytosis
Labyrinthitis
Leukoplakia
Listeriosis
Leptospirosis
Low back pain
Lassa fever
Learning disability
Lambert-Eaton myasthenic syndrome
Lipoma
Lead poisoning
Lumbago
Long QT syndrome
Lipodystrophy
Lymphogranuloma venereum
Lissencephaly
Lymphocytosis
Leishmaniasis
Lymphopenia
Laryngitis
Leiomyoma
Lymphomatoid granulomatosis
Lordosis
Lattice degeneration
Leukodystrophy
Leukemia
Lactic acidosis
Lichen Planus
Lichen sclerosus
Lip cancer
Lysosomal storage disease