disease has location hereditary disease double nail for fifth toe https://rarediseases.info.nih.gov/diseases/9672/double-nails-on-the-fifth-toe https://www.malacards.org/card/double_nail_for_fifth_toe MONDO:0007469 OMIM:126500 Double nails on the fifth toe MESH:C565090 double nail for fifth toe MEDGEN:343705 UMLS:C1852023 fifth toe, double nails pedal digit 5