| Infektionskrankheit | infectious disease |
| Infektiosität | infectiousness |
| Informationseinheit | information unit |
| Konfessionsfreiheit | nonsectarianism |
| Injektionsnarkose | intravenous anesthesia |
| Bewegungskrankheit | motion sickness |
| Geisteskrankheit | mental illness |
| Berufskrankheit | industrial disease occupational disease |
| Entmarkungskrankheit | demyelinating disease |
| Kusskrankheit | Kissing Disease |
| Addison-Krankheit | Addison's disease |
| Alkoholkrankheit | alcohol addiction |
| Autokrankheit | carsickness |
| Caissonkrankheit | decompression sickness |
| Elefantenkrankheit | elephantiasis |
| Parkinson-Krankheit | Parkinson's disease |
| Frauenkrankheit | female disease gynaecological disorder |
| Höhenkrankheit | altitude sickness |
| Kinderkrankheit | children's disease children's illness paediatric disease teething problems teething troubles |
| Luftkrankheit | airsickness |