Eponyms beginning with J
- Jackson's sign
- Jackson's sign
- Jackson's syndrome II
- Jackson-MacKenzie syndrome
- Jacksonian epilepsy
- Jacksonian march
- Jackson’s paralysis
- Jackson’s syndrome
- Jacobsohn’s finger flexion sign
- Jacobsohn’s sign
- Jacquelin-Burnand syndrome
- Jacquet syndrome
- Jacquet's erythema
- Jacquet's syndrome
- Jacquet’s dermatitis
- Jacquet’s disease
- Jadassohn naevus sebaceous
- Jadassohn's disease I
- Jadassohn's disease II
- Jadassohn's disease III
- Jadassohn's nevus phakomatosis
- Jadassohn-Dössekker disease
- Jadassohn-Lewandowsky syndrome
- Jadassohn-Tièche nevus
- Jadassohn-Tièche syndrome