from the annual meeting of the Society for Pediatric Dermatology in Philadelphia
9. Progressive Osseous Heteroplasia
8. Epidermolytic Hyperkeratosis
7. Recessive Dystrophic Epidermolysis Bullosa
6. Junctional Epidermolysis Bullosa
5. Hemangioma
2. Fibrodysplasia Ossificans Progressiva

Image courtesy of Wikimedia Commons
*It was really hard to rank these.
—Kerri Wachter (@knwachter on Twitter)
