Morbus Marion syn — Morbus Niemann-Pick syn
- morbus Marion syn. syndr. Marion
- morbus Marsh syn. syndr. Basedow
- morbus Meige syn. syndr. Nonne-Milroy
- morbus Meleda syn. syndr. Meleda
- morbus Meniere syn. syndr. Meniere
- morbus Menkes syn. syndr. Menkes (II)
- morbus Meyenburg syn. syndr. Meyenburg-Altherr-Uehlinger
- morbus Meyer-Betz syn. syndr. Meyer-Betz
- morbus Mikulicz syn. syndr. Mikulicz
- morbus Mikulicz-Gougerot-Sjogren syn. syndr. Sjogren (I)
- morbus Milkman syn. syndr. Milkman
- morbus Mills syn. syndr. Mills
- morbus Minimata syn. syndr. Minimata
- morbus Mirizzi syn. syndr. Mirizzi
- morbus Mitchell syn. syndr. Пирогов
- morbus Mljet syn. syndr. Meleda
- morbus Moeller syn. syndr. Moeller-Barlow
- morbus Moeller-Barlow syn. syndr. Moeller-Barlow
- morbus Moeller-Boeck syn. syndr. Besnier-Boeck-Schaumann
- morbus Mondor syn. syndr. Mondor
- morbus montanus syn. syndr. dAcosta
- morbus Morquio-Brailsford syn. syndr. Brailsford-Morquio
- morbus Mortimer syn. syndr. Besnier-Boeck-Schaumann
- morbus Morvan syn. syndr. Morvan (II)
- morbus Moschcowitz syn. syndr. Moschcowitz
- morbus Munchmeyer syn. syndr. Munchmeyer
- morbus van Neck syn. syndr. van Neck
- morbus van Neck-Odelberg syn. syndr. van Neck
- morbus nervorum faciei crucians syn. syndr. Fothergill
- morbus Netherton syn. syndr. Netherton
- morbus Nettleship syn. syndr. Nettleship
- morbus Nicolas-Favre syn. syndr. Durand-Nicolas-Favre
- morbus Niemann-Pick syn. syndr. Niemann-Pick
