CurrentApr 1, 2026 – Sep 30, 2026
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Disease index · P

Disease index · Modifiers and references

PANDAS(pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections syndrome)PAPA(pyogenic arthritis, pyoderma gangrenosum, and acne syndrome)PAT(paroxysmal atrial tachycardia)PFAPA(periodic fever, aphthous stomatitis, pharyngitis, and adenopathy syndrome)PHTSPIMSPINPMEI(polymorphic epilepsy in infancy)POTS(postural orthostatic tachycardia syndrome)PRES(posterior reversible encephalopathy syndrome)PRIND(Prolonged reversible ischemic neurologic deficit)PTPPUO(pyrexia of unknown origin)Pachyderma, pachydermiaPachydermatocele(congenital)PachydermoperiostosisPachygyriaPachymeningitis(adhesive) (basal) (brain) (cervical) (chronic)(circumscribed) (external) (fibrous) (hemorrhagic) (hypertrophic) (internal) (purulent) (spinal) (suppurative)Pachyonychia(congenital)Pacinian tumorPad, knuckle or Garrod'sPaget's diseasePaget-Schroetter syndromePain(s)PainfulPainter's colicPalatePalatoplegiaPalatoschisisPalilaliaPalliative carePallorPalmarPalpablePalpitations(heart)PalsyPaludismPanangiitisPanaris, panaritiumPanarteritis nodosaPancake heartPancarditis(acute) (chronic)Pancoast's syndrome or tumorPancolitisPancreas, pancreaticPancreatitis(annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)PancreatoblastomaPancreolithiasisPancytolysisPancytopenia(acquired)Panencephalitis, subacute, sclerosingPanhematopeniaPanhemocytopeniaPanhypogonadismPanhypopituitarismPanic(attack) (state)Panmyelopathy, familial, constitutionalPanmyelophthisisPanmyelosis(acute) (with myelofibrosis)Panner's diseasePanneuritis endemicaPanniculitis(nodular) (nonsuppurative)Panniculus adiposus(abdominal)Pannus(allergic) (cornea) (degenerativus) (keratic)PanophthalmitisPansinusitis(chronic) (hyperplastic) (nonpurulent) (purulent)PansynostosisPanuveitis(sympathetic)Panvalvular diseasePapanicolaou smear, cervixPapilledema(choked disc)PapillitisPapillomaPapillomata, multiple, of yawsPapillomatosisPapillomavirus, as cause of disease classified elsewherePapillon-Léage and Psaume syndromePapule(s)PapulosisPapyraceous fetusPara-albuminemiaParacephalusParachute mitral valveParacoccidioidomycosisParadentosisParaffinomaParagangliomaParageusiaParagonimiasisParagranuloma, HodgkinParahemophiliaParakeratosisParalysis, paralytic(complete) (incomplete)Paramedial urethrovesical orificeParameniaParametritisParametrium, parametricParamnesiaParamolarParamyloidosisParamyoclonus multiplexParamyotonia(congenita)ParangiParanoia(querulans)ParanoidParaparesisParaphasiaParaphiliaParaphimosis(congenital)Paraphrenia, paraphrenic(late)Paraplegia(lower)ParapoxvirusParaproteinemiaParapsoriasisParasiticParasitismParasitophobiaParasomniaParaspadiasParaspasmus facialisParasuicide(attempt)Parathyroid glandParathyroid tetanyParatrachomaParatyphilitisParatyphoid(fever)ParatyphusParaurethral ductParaurethritisParavaccinia NECParavaginitisParencephalitisParent-child conflictParesisParesthesiaPareticParinaud'sParkinson's diseaseParkinson's syndrome or tremorParkinsonism(idiopathic) (primary)ParodontitisParodontosisParonychiaParorexia(psychogenic)ParosmiaParotid glandParotitis, parotiditis(allergic)(nonspecific toxic) (purulent) (septic) (suppurative)Parrot feverParrot's disease(early congenital syphilitic pseudoparalysis)Parry's disease or syndromeParry-Romberg syndromePars planitisParson's disease(exophthalmic goiter)Parsonage(-Aldren)-Turner syndromeParticolored infantParturitionParulisParvovirus, as cause of disease classified elsewherePasini and Pierini's atrophodermaPassagePassivePast due on rent or mortgagePasteurella septicaPasteurellosisPatau's syndromePatchesPatellarPatentPaterson(-Brown)(-Kelly) syndrome or webPathologic, pathologicalPathology(of)Pattern, sleep-wake, irregularPatulousPause, sinoatrialPaxton's diseasePearl(s)Pearl-worker's diseasePectenosisPectoralPectusPedatrophiaPederosisPediatric inflammatory multisystem syndromePediculosis(infestation)Pediculus(infestation)PedophiliaPeg-shaped teethPel's crisisPeladePelger-Huët anomaly or syndromePeliosis(rheumatica)Pelizaeus-Merzbacher diseasePellagra(alcoholic)Pellagra-cerebellar-ataxia-renal aminoaciduria syndromePellegrini(-Stieda) disease or syndromePellizzi's syndromePelvicPelviolithiasisPelviperitonitisPelvis