Many diseases start with the letter "J." Here's a list of some of them:
- Jackson–Weiss syndrome
- Jacobsen syndrome
- Jadassohn–Lewandowsky syndrome
- Jaffer–Beighton syndrome
- Jalili syndrome
- Jancar syndrome
- Jankovic–Rivera syndrome
- Jansen type metaphyseal chondrodysplasia
This is not an exhaustive list, and there are many other diseases that begin with "J." More information can be found in the List of diseases (J) on Wikipedia.
