Encyclopedia Home >Diseases & Conditions (A-Z)
PA/IVSPlummer's disease
PADPlummer-Vinson syndrome/esophageal web
Paget’s diseasePMDD
Pahvant Valley plaguePML
Pain disorderPMS
Painful menstrual periods - adolescentPneumococcal meningitis
Painless (silent) thyroiditisPneumoconiosis
Palatal myoclonusPneumocystis carinii pneumonia
Palsy - progressive supranuclearPneumocystis jiroveci
Pancreas divisumPneumocystosis
Pancreatic abscessPneumomediastinum
Pancreatic cancerPneumonia
Pancreatic carcinomaPneumonia - cytomegalovirus
Pancreatic endocrine tumorPneumonia - viral
Pancreatic islet cell tumorPneumonia in immunocompromised host
Pancreatic pseudocystPneumonia in immunodeficient patient
PancreatitisPneumonic plague
PanhypopituitarismPneumothorax
Panic attacksPneumothorax - tension
Panic disorderPNH
Panic disorder with agoraphobiaPoison ivy
Papillary carcinoma of the thyroidPoison oak
Papular acrodermatitis of childhoodPoison sumac
Papulovesicular acro-located syndromePolio
ParahemophiliaPoliomyelitis
ParainfluenzaPolyarteritis nodosa
Paralysis - spasticPolychromatophilia
Paralysis agitansPolycystic kidney disease
Paralytic ileusPolycystic ovarian syndrome (PCOS)
Paramyotonia congenitaPolycystic ovaries
Paranoid personality disorderPolycystic ovary disease
Paranoid schizophreniaPolycythemia rubra vera
ParaphimosisPolycythemia vera
Parapneumonic pulmonary effusionPolycythemia with chronic cyanosis - Myelopathic polycythemia
Paraquat lungPolyfollicular ovarian disease.
Parathyroid adenomaPolymorphic light eruption
Parathyroid cancerPolymorphous light eruption
Parathyroid carcinomaPolymyalgia rheumatica
Parathyroid hyperplasiaPolymyositis - adult
Parathyroid-related hypercalcemiaPolyneuropathy - chronic inflammatory
Parinaud syndromePolyneuropathy - sensorimotor
Parkinson's plus syndromePolyostotic fibrous dysplasia
Parkinson’s diseasePolyps - colorectal
Parkinsonism - secondaryPompholyx
ParonychiaPontiac fever
ParotitisPopliteal cyst
Paroxysmal cold hemoglobinuria (PCH)Pork tapeworm
Paroxysmal nocturnal hemoglobinuria (PNH)Porphyria
Paroxysmal supraventricular tachycardia (PSVT)Port-wine stain
Pars planitisPortacaval shunt
Partial (focal) seizurePost-cardiac injury syndrome
Partial androgen insensitivity syndromePost-infectious glomerulonephritis
Partial lung collapsePost-MI pericarditis
Parvovirus B19Post-partum depression
Passive-aggressive personality disorderPost-splenectomy syndrome
Patau syndromePost-streptococcal GN
Patches on the tonguePost-traumatic stress disorder
Patellofemoral syndromePostcardiotomy pericarditis
Patent ductus arteriosusPosterior circulation ischemia
Patent foramen ovalePosterior fossa tumor
Patent processus vaginalisPosterior tongue carcinoma
Paterson-Kelly syndromePosterior uveitis
Pathological gamblingPostherpetic neuralgia
Pavor nocturnusPostmenopause
PBCPostpartum hypopituitarism
PCHPostpartum pituitary insufficiency
PCPPostprandial hypotension
PDAPostural kyphosis
Pediatric asthmaPotassium - high
Pediculosis - pubic licePotassium - low
Pediculosis capitis - head licePotassium wasting
PellagraPotter phenotype
Pelvic adhesionPotter syndrome
Pelvic floor herniaPPH
Pelvic fracturePrader-Willi syndrome
Pelvic inflammatory disease (PID)Precancerous changes of the cervix
Pelvic pain syndromePrecocious puberty
Pelvic relaxationPreeclampsia
Pemphigus vulgarisPreemie
Penile cancerPreexcitation syndrome
Penile wartsPregnancy - teenage
Peptic diseasePregnancy mask
Peptic esophagitisPregnancy-induced hypertension
Peptic ulcerPremature beats
Perforated eardrumPremature closure of sutures
Perforation of the esophagusPremature contraction
Perforation of the intestinesPremature ejaculation
Perianal streptococcal cellulitisPremature infant
Periapical abscessPremature ovarian failure
Periarteritis nodosaPremature separation of placenta
Pericardial tamponadePremenstrual dysphoric disorder
PericarditisPremenstrual syndrome
Pericarditis - after heart attackPrerenal azotemia
Pericarditis - bacterialPresbycusis
Pericarditis - constrictivePresbyopia
PerichondritisPreseptal cellulitis
PerimenopausePressure-related ear pain
Periodic diseasePreterm infant
Periodic feverPrimary adrenal insufficiency
Periodic paralysis - hyperkalemicPrimary alveolar hypoventilation
Periodic paralysis - hypokalemicPrimary amenorrhea
Periodic paralysis - thyrotoxicPrimary amyloidosis
Periodic paralysis with hypokalemiaPrimary biliary cirrhosis
Periodic peritonitisPrimary cardiac amyloidosis - AL type
Periodontal diseasePrimary HIV infection
PeriodontitisPrimary hyperparathyroidism
Periods - painful (adolescent)Primary hypogonadism - male
Perioral dermatitisPrimary Insomnia
Periorbital cellulitisPrimary intestinal pseudo-obstruction
Peripartum cardiomyopathyPrimary liver cell carcinoma
Peripheral arterial diseasePrimary lymphoma of the brain
Peripheral neuritisPrimary lymphoma of the central nervous system
Peripheral neuropathyPrimary myelofibrosis
Peripheral vascular diseasePrimary or secondary fibrinolysis
Perirenal abscessPrimary polycythemia
PeritonitisPrimary progressive aphasia
Peritonitis - dialysis associatedPrimary pulmonary hypertension
Peritonitis - secondaryPrimary sclerosing cholangitis
Peritonitis - spontaneousPrimary syphilis
Peritonsillar abscessPrimary thrombocythemia
Periungual wartsPrimitive neuroectodermal tumors (PNET)
Periventricular leukomalaciaPrinzmetal's angina 
Pernicious anemiaProcessus vaginalis
Peroneal nerve injuryProctitis
Peroneal nerve palsyProctitis - streptococcal
Persistent hepatitisProgeria
Personality disorder - antisocialProgressive angina
Personality disorder - avoidantProgressive massive fibrosis
Personality disorder - borderlineprogressive massive fibrosis
Personality disorder - dependentProgressive multifocal leukoencephalopathy
Personality disorder - obsessive-compulsiveProgressive neuropathic (peroneal) muscular atrophy
Personality disorder - paranoidProgressive septic granulomatosis
Personality disorder - passive-aggressiveProgressive supranuclear palsy
Personality disorder - schizoidProgressive systemic sclerosis
Personality disordersProlactin-secreting ademoma of the pituitary
Perspiration - excessiveProlactinoma
Perthes diseaseProlactinoma - females
PertussisProlactinoma - males
Pervasive developmental disorder - Asperger syndromeProlapsed intervertebral disk
Pervasive developmental disorder - autismProlapsing mitral leaflet syndrome
Pes cavusPronation of feet
Pes planovalgusProstate - enlarged
Pes planusProstate cancer
Pet allergiesProstatism
Petit mal seizureProstatitis - acute
PetrositisProstatitis - chronic
Peutz-Jeghers syndromeProstatitis - nonbacterial
Peyronie's diseaseProstatodynia
PFOProtein malnutrition
PGYM deficiencyProtein-calorie malnutrition
PharyngitisProthrombin deficiency
Pharyngitis - gonococcalProximal renal tubular acidosis
Pharyngitis - streptococcalPrune belly syndrome
Pharyngitis - viralPseudo-ainhum
Pharyngomaxillary space abscessPseudo-obstruction - intestinal
Phenacetin nephritisPseudofolliculitis barbae
PhenylketonuriaPseudogout
PheochromocytomaPseudohermaphroditism
Philippine hemorrhagic feverPseudohypertrophic muscular dystrophy
PhlebitisPseudohypoparathyroidism
Phlegmasia cerulea dolensPseudomembranous colitis
Phobia - simple/specificPseudotumor cerebri
Phobia - socialPsittacosis
Phonological disorderPsoriasis
Phosphate - lowPsoriasis - guttate
Phymatous rosaceaPsoriatic arthritis
Physical abuse - childrenPSVT
Physiologic ovarian cystsPsychopathic personality
PicaPsychosis
Pick’s diseasePsychotic
Pickwickian syndromePsychotic depression
PIDPterygium
Pierre Robin syndromePtosis
PilesPTSD
PimplesPubertas praecox
PingueculaPubic lice
Pink eyePulled elbow
PinwormsPulmonary actinomycosis
Pitcher's shoulderPulmonary alveolar proteinosis
Pituitary apoplexyPulmonary arterial hypertension
Pituitary Cushing's diseasePulmonary arteriovenous fistula
Pituitary dwarfismPulmonary aspergilloma (mycetoma)
Pituitary hypothyroidismPulmonary aspergillosis - allergic bronchopulmonary type
Pituitary infarctionPulmonary aspergillosis - invasive
Pituitary insufficiencyPulmonary atresia
Pituitary tumorPulmonary edema
Pityriasis albaPulmonary embolus
Pityriasis roseaPulmonary fibrosis
Pityriasis rubraPulmonary fibrosis - from asbestos exposure
Pityriasis rubra pilarisPulmonary histiocytosis X
Pityriasis versicolorPulmonary hypertension
PKUPulmonary infiltrates with eosinophilia
Placenta abruptioPulmonary Langerhans cell granulomatosis
Placenta previaPulmonary nocardiosis
Placental abruptionPulmonary renal syndrome
Placental dysfunctionPulmonary tuberculosis
Placental insufficiencyPulmonary valve stenosis
PlaguePulmonary vaso-occlusive disease
Plane juvenile wartsPulmonary veno-occlusive disease
Plantar fasciitisPulseless disease
Plantar wartsPupil-involving third cranial nerve palsy
Plaque buildup - arteriesPupil-sparing third cranial nerve palsy
Plaque psoriasisPurulent pericarditis
Plasma cell dyscrasiaPVB (premature ventricular beat)
Plasma cell myelomaPVC (premature ventricular contraction)
Plasmacytoma of bonePVD
PlasmodiumPVL
Platelet function defects - congenitalPyelonephritis
Pleural effusionPyloric stenosis
Pleural effusion - asbestos-relatedPyogenic granuloma
Pleural fluidPyogenic liver abscess
PleurisyPyorrhea - gum disease
Pleuritic chest painPyruvate kinase deficiency
Pleuritis 
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