Morbus Nonne-Milroy syn — Morbus Pfeiffer syn
- morbus Nonne-Milroy syn. syndr. Nonne-Milroy
- morbus Norrie syn. syndr. Norrie-Warburg
- morbus Nygaard-Brown syn. syndr. Nygaard-Brown
- morbus Oguchi syn. syndr. Oguchi
- morbus Oilier syn. syndr. Oilier
- morbus Oppenheim syn. syndr. Oppenheim
- morbus Ormond syn. syndr. Ormond
- morbus Osgood syn. syndr. Osgood-Schlatter
- morbus Osier syn. syndr. Osier, syndr. Vaquez-Osier
- morbus osteoblasticus Bergstrand syn. syndr. Bergstrand
- morbus Owren syn. syndr. Owren (I)
- morbus Paget syn. syndr. Paget
- morbus Paltauf-Sternberg syn. syndr. Hodgkin
- morbus Panner syn. syndr. Panner
- morbus Parkinson syn. syndr. Parkinson
- morbus Parrot syn. syndr. Parrot (I); syndr. Parrot (II)
- morbus Pasini-Pierini syn. syndr. Pasini-Pierini
- morbus Pautrier-Woringer syn. syndr. Pautrier-Woringer
- morbus Payr syn. syndr. Payr
- morbus Pel-Ebstein syn. syndr. Hodgkin
- morbus Pelizaeus-Merzbacher ьуп. syndr. Pelizaeus-Merzbacher
- morbus Pellegrini-Stieda syn. syndr. Stieda-Pellegrini
- morbus Pepper syn. syndr. Pepper
- morbus periodicus syn. syndr. Siegel-Cattan-Mamou
- morbus periodicus familiaris syn. syndr. Siegel-Cattan-Mamou
- morbus Perthes syn. syndr. Calve-Legg-Perthes
- morbus Patzetakis syn. syndr. Debre (III)
- morbus de la Peyronie syn. syndr. de la Peyronie
- morbus Pfaundler-Hurler syn. syndr. Pfaundler-Hurler
- morbus Pfeiffer syn. syndr. Pfeiffer
