Imbecillitas phenylpyruvica syn — Ischias nervosa Cotugno syn
- imbecillitas phenylpyruvica syn. syndr. Foiling
- imidazolum-syndromus syn. syndr. Bessman-Baldwin
- incontinentia pigmenti Bloch-Sulzberger syn, syndr. Bloch-Sulzberger
- incontinentia pigmenti Naegeli syn. syndr. Franceschetti-Jadassohn
- Indian childhood cirrhosis (англ.) syn. syndr. Sen
- induratio penis plastica syn. syndr. de la Peyronie
- infantilismus Brissaud syn. syndr. Brissaud-Meige
- infantilismus Hirschsprung-Galant syn. syndr. Hirschsprung
- infantilismus hypophysarius, syn. syndr. Lorain
- infantilismus intestinalis syn. syndr. Heubner-Herter
- infantilismus pterygonuchalis syn. syndr. Шерешевский-Turner
- infantilismus renalis syn. syndr. Abderhalden-Fanconi
- infiltratus pulmonis eosinophilicus, syn. syndr. Loffler (I)
- Influenzabazillen-Syndrom (нем.) syn. syndr. Kleinschmidt
- insufficientia arteriae basilaris intermittens syn. syndr. Millikan-Siekert
- insufficientia cardialis energetico-dynamica syn. syndr. Hegglin (II)
- insufficientia ovarica vegetativa syn. syndr. Curtius (II)
- insufficientia pancreatothyreosuprarenalis syn. syndr. Schmidt (II)
- insufficientia pluriglandular syn. syndr. Falta
- insufficientia spinalis syn. syndr. Schanz
- insufficientia suprarenalis paradoxa syn. syndr. Debre-Fibiger
- insufficientia thyreosuprarenalis syn. syndr. Schmidt (II)
- insufficientia vertebrae syn. syndr. Schanz
- interferentia-dissociatio syn. syndr. Mobitz
- interpositio hepatodiaphragmatica syn. syndr. Chilaiditi
- interstitial nephritis (англ.) syn. syndr. Zollinger (II)
- intoxicatio interrenalis syn. syndr. Debre-Fibiger
- intoxicatio interrenalis androgenes syn. syndr. Debre-Fibiger
- iridocyclitis septica syn. syndr. Behcet
- ititis septica syn. syndr. Behcet
- ischias nervosa Cotugno syn. syndr. Cotugno
