| | Facial asymmetry temporal seizures |
| | Facial clefting corpus callosum agenesis |
| | Facial dysmorphism macrocephaly myopia Dandy Walker type |
| | Facial dysmorphism shawl scrotum joint laxity syndrome |
| | Facies unusual arthrogryposis advanced skeletal malformations |
| | Facio digito genital syndrome recessive form |
| | Facio skeletal genital syndrome Rippberger type |
| | Facio thoraco genital syndrome |
| | Faciocardiomelic dysplasia lethal |
| | Faciocardiorenal syndrome |
| | Faciooculoacousticorenal syndrome |
| | Facioscapulohumeral muscular dystrophy |
| | Factor X deficiency, congenital |
| | Factor XI deficiency, congenital |
| | Factor XIII deficiency, congenital |
| | Familial adenomatous polyposis |
| | Familial amyloid polyneuropathy |
| | Familial aortic dissection |
| | Familial band heterotopia |
| | Familial Cold Autoinflamatory Syndrome (FCAS) |
| | Familial Colorectal Cancer |
| | Familial dilated cardiomyopathy |
| | Familial hyperchylomicronemia |
| | Familial hyperlipoproteinemia type I |
| | Familial hyperlipoproteinemia type III |
| | Familial hyperlipoproteinemia type IV |
| | Familial hyperlipoproteinemia |
| | Familial hypersensitivity pneumonitis |
| | Familial intestinal polyatresia syndrome |
| | Familial Mediterranean fever |
| | Familial multiple trichodiscomas |
| | Familial non-immune hyperthyroidism |
| | Familial opposable triphalangeal thumbs duplication |
| | Familial partial epilepsy with variable focus |
| | Familial periodic paralysis |
| | Familial supernumerary nipples |
| | Familial symmetric lipomatosis |
| | Familial Treacher Collins syndrome |
| | Familial veinous malformations |
| | Familial ventricular tachycardia |
| | Familial visceral myopathy |
| | Fanconi ichthyosis dysmorphism |
| | Fanconi syndrome, renal, with nephrocalcinosis and renal stones |
| | Fara Chlupackova syndrome |
| | Faulk Epstein Jones syndrome |
| | Faye Petersen Ward Carey syndrome |
| | Feigenbaum Bergeron Richardson syndrome |
| | Feigenbaum Bergeron syndrome |
| | Female pseudohermaphrodism Genuardi type |
| | Female pseudohermaphroditism |
| | Femur bifid with monodactylous ectrodactyly |
| | Femur fibula ulna syndrome |
| | Fenton Wilkinson Toselano syndrome |
| | Ferlini Ragno Calzolari syndrome |
| | Fernhoff Blackston Oakley syndrome |
| | Ferrocalcinosis cerebro vascular |
| | Fetal akinesia syndrome X linked |
| | Fetal aminopterin syndrome |
| | Fetal and neonatal alloimmune thrombocytopenia |
| | Fetal antihypertensive drugs syndrome |
| | Fetal brain disruption sequence |
| | Fetal cytomegalovirus syndrome |
| | Fetal diethylstilbestrol syndrome |
| | Fetal enterovirus syndrome |
| | Fetal indomethacin syndrome |
| | Fetal left ventricular aneurysm |
| | Fetal methimazole syndrome |
| | Fetal methyl mercury syndrome |
| | Fetal parainfluenza virus type 3 syndrome |
| | Fetal parvovirus syndrome |
| | Fetal phenothiazine syndrome |
| | Fetal prostaglandin syndrome |
| | Fetal thalidomide syndrome |
| | Fiber type disproportion, congenital |
| | Fibrinogen deficiency, congenital |
| | Fibromatosis gingival hypertrichosis |
| | Fibromatosis multiple non ossifying |
| | Fibromuscular dysplasia of arteries |
| | Fibrous dysplasia of bone |
| | Fibrodysplasia ossificans progressiva |
| | Fibula aplasia complex brachydactyly |
| | Fibular aplasia ectrodactyly |
| | Fibular hypoplasia femoral bowing oligodactyly |
| | Fibular hypoplasia scapulo pelvic dysplasia absent |
| | Fingerprints absence syndactyly milia |
| | Finnish lethal neonatal metabolic syndrome |
| | Finucane Kurtz Scott syndrome |
| | Fistulous vegetative verrucous hydradenoma |
| | Fitz-Hugh-Curtis syndrome |
| | Fitzsimmons Walson Mellor syndrome |
| | Fitzsimmons-Guilbert syndrome |
| | Fitzsimmons-McLachlan-Gilbert syndrome |
| | Florid cystic endosalpingiosis of the uterus |
| | Focal alopecia congenital megalencephaly |
| | Focal facial dermal dysplasia |
| | Focal or multifocal malformations in neuronal migration |
| | Foix-Chavany-Marie syndrome |
| | Foix-Alajouanine syndrome |
| | Follicular atrophoderma-basal cell carcinoma |
| | Follicular Dendritic Cell Tumor |
| | Follicular hamartoma alopecia cystic fibrosis |
| | Follicular lymphoreticuloma |
| | Fontaine Farriaux Blanckaert syndrome |
| | Forney Robinson Pascoe syndrome |
| | Fowler Christmas Chapele syndrome |
| | Fragile X syndrome type 1 |
| | Fragile X syndrome type 2 |
| | Fragile X syndrome type 3 |
| | Fragoso Cid Garcia Hernandez syndrome |
| | Franceschetti-Klein syndrome |
| | Francheschini Vardeu Guala syndrome |
| | Francois dyscephalic syndrome |
| | Franek Bocker kahlen syndrome |
| | Fraser Jequier Chen syndrome |
| | Free sialic acid storage disease |
| | Freire Maia odontotrichomelic syndrome |
| | Freire Maia Pinheiro Opitz syndrome |
| | Fried Goldberg Mundel syndrome |
| | Friedel Heid Grosshans syndrome |
| | Friedman Goodman syndrome |
| | Friedreich ataxia congenital glaucoma |
| | Fronto nasal malformation cloacal exstrophy |
| | Frontofacionasal dysplasia type Al gazali |
| | Fronto-facio-nasal dysplasia |
| | Frontometaphyseal dysplasia |
| | Frontonasal dysplasia acromelic |
| | Frontonasal dysplasia klippel feil syndrome |
| | Frontonasal dysplasia phocomelic upper limbs |
| | Froster Iskenius Waterson syndrome |
| | Fructose-1,6-bisphosphatase deficiency |
| | Fructose-1-phosphate aldolase deficiency, heredita |
| | Frydman Cohen Ashenazi syndrome |
| | Frydman Cohen Karmon syndrome |
| | Fryns Fabry Remans syndrome |
| | Fryns Hofkens Fabry syndrome |
| | Fryns smeets thiry syndrome |
| | Fuhrmann Rieger De sousa syndrome |
| | Fukuda Miyanomae Nakata syndrome |
| | Fukuyama type muscular dystrophy |
| | Functioning pancreatic endocrine tumor |
| | Furlong Kurczynski Hennessy syndrome |
| | Furukawa Takagi Nakao syndrome |
| | Fused mandibular incisors |
| |