Disease Reference Index - P

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• PA/IVS
• PAD
• Paget’s disease
• Pain disorder
• Painful menstrual periods - adolescent
• Painless (silent) thyroiditis
• Palatal myoclonus
• Palsy - progressive supranuclear
• Pancreas divisum
• Pancreatic abscess
• Pancreatic cancer
• Pancreatic carcinoma
• Pancreatic endocrine tumor
• Pancreatic islet cell tumor
• Pancreatic pseudocyst
• Pancreatitis
• Panhypopituitarism
• Panic attacks
• Panic disorder
• Panic disorder with agoraphobia
• Papillary carcinoma of the thyroid
• Papular acrodermatitis of childhood
• Papulovesicular acro-located syndrome
• Parahemophilia
• Parainfluenza
• Paralysis - spastic
• Paralysis agitans
• Paralytic ileus
• Paramyotonia congenita
• Paranoid personality disorder
• Paranoid schizophrenia
• Paraphimosis
• Parapneumonic pulmonary effusion
• Paraquat lung
• Parathyroid adenoma
• Parathyroid cancer
• Parathyroid carcinoma
• Parathyroid hyperplasia
• Parathyroid-related hypercalcemia
• Parinaud syndrome
• Parkinson's plus syndrome
• Parkinsonism - secondary
• Parkinson’s disease
• Paronychia
• Parotitis
• Paroxysmal cold hemoglobinuria (PCH)
• Paroxysmal nocturnal hemoglobinuria (PNH)
• Paroxysmal supraventricular tachycardia (PSVT)
• Pars planitis
• Partial (focal) seizure
• Partial androgen insensitivity syndrome
• Partial lung collapse
• Parvovirus B19
• Passive-aggressive personality disorder
• Patau syndrome
• Patches on the tongue
• Patellofemoral syndrome
• Patent ductus arteriosus
• Patent foramen ovale
• Patent processus vaginalis
• Paterson-Kelly syndrome
• Pathological gambling
• Pavor nocturnus
• PBC
• PCH
• PCP
• PDA
• Pediatric asthma
• Pediculosis - pubic lice
• Pediculosis capitis - head lice
• Pellagra
• Pelvic adhesion
• Pelvic floor hernia
• Pelvic fracture
• Pelvic inflammatory disease (PID)
• Pelvic pain syndrome
• Pelvic relaxation
• Pemphigus vulgaris
• Penile cancer
• Penile warts
• Peptic disease
• Peptic esophagitis
• Peptic ulcer
• Perforated eardrum
• Perforation of the esophagus
• Perforation of the intestines
• Perianal streptococcal cellulitis
• Periapical abscess
• Periarteritis nodosa
• Pericardial tamponade
• Pericarditis
• Pericarditis - after heart attack
• Pericarditis - bacterial
• Pericarditis - constrictive
• Perichondritis
• Perimenopause
• Periodic disease
• Periodic fever
• Periodic paralysis - hyperkalemic
• Periodic paralysis - hypokalemic
• Periodic paralysis - thyrotoxic
• Periodic paralysis with hypokalemia
• Periodic peritonitis
• Periodontitis
• Periods - painful (adolescent)
• Perioral dermatitis
• Periorbital cellulitis
• Peripartum cardiomyopathy
• Peripheral arterial disease
• Peripheral neuritis
• Peripheral neuropathy
• Peripheral vascular disease
• Perirenal abscess
• Peritonitis
• Peritonitis - dialysis associated
• Peritonitis - secondary
• Peritonitis - spontaneous
• Peritonsillar abscess
• Periungual warts
• Periventricular leukomalacia
• Pernicious anemia
• Peroneal nerve injury
• Peroneal nerve palsy
• Persistent hepatitis
• Personality disorder - antisocial
• Personality disorder - avoidant
• Personality disorder - borderline
• Personality disorder - dependent
• Personality disorder - obsessive-compulsive
• Personality disorder - paranoid
• Personality disorder - passive-aggressive
• Personality disorder - schizoid
• Personality disorders
• Perspiration - excessive
• Perthes disease
• Pertussis
• Pervasive developmental disorder - Asperger syndrome
• Pervasive developmental disorder - autism
• Pes cavus
• Pes planovalgus
• Pes planus
• Pet allergies
• Petit mal seizure
• Petrositis
• Peutz-Jeghers syndrome
• Peyronie's disease
• PFO
• PGYM deficiency
• Pharyngitis
• Pharyngitis - gonococcal
• Pharyngitis - streptococcal
• Pharyngitis - viral
• Pharyngomaxillary space abscess
• Phenacetin nephritis
• Phenylketonuria
• Pheochromocytoma
• Philippine hemorrhagic fever
• Phlebitis
• Phlegmasia cerulea dolens
• Phobias
• Phobia - social
• Phonological disorder
• Phosphate - low
• Phymatous rosacea
• Physical abuse - children
• Physiologic ovarian cysts
• Pica
• Pickwickian syndrome
• Pick’s disease
• PID
• Pierre Robin syndrome
• Piles
• Pimples
• Pinguecula
• Pink eye
• Pinworms
• Pitcher's shoulder
• Pituitary apoplexy
• Pituitary Cushing's disease
• Pituitary dwarfism
• Pituitary hypothyroidism
• Pituitary infarction
• Pituitary insufficiency
• Pituitary tumor
• Pityriasis alba
• Pityriasis rosea
• Pityriasis rubra
• Pityriasis rubra pilaris
• Pityriasis versicolor
• PKU
• Placenta abruptio
• Placenta previa
• Placental abruption
• Placental dysfunction
• Placental insufficiency
• Plague
• Plane juvenile warts
• Plantar fasciitis
• Plantar warts
• Plaque buildup - arteries
• Plaque psoriasis
• Plasma cell dyscrasia
• Plasma cell myeloma
• Plasmacytoma of bone
• Plasmodium
• Platelet function defects - congenital
• Pleural effusion
• Pleural effusion - asbestos-related
• Pleural fluid
• Pleurisy
• Pleuritic chest pain
• Pleuritis
• Plummer's disease
• Plummer-Vinson syndrome/esophageal web
• PMDD
• PML
• PMS
• Pneumococcal meningitis
• Pneumoconiosis
• Pneumocystis carinii pneumonia
• Pneumocystis jiroveci
• Pneumocystosis
• Pneumomediastinum
• Pneumonia
• Pneumonia - cytomegalovirus
• Pneumonia - viral
• Pneumonia in immunocompromised host
• Pneumonia in immunodeficient patient
• Pneumonic plague
• Pneumonitis
• Pneumothorax
• Pneumothorax - tension
• PNH
• Poison ivy
• Poison oak
• Poison sumac
• Polio
• Poliomyelitis
• Polyarteritis nodosa
• Polychromatophilia
• Polycystic kidney disease
• Polycystic ovarian syndrome (PCOS)
• Polycystic ovaries
• Polycystic ovary disease
• Polycythemia rubra vera
• Polycythemia vera
• Polycythemia with chronic cyanosis - Myelopathic polycythemia
• Polyfollicular ovarian disease.
• Polymorphic light eruption
• Polymorphous light eruption
• Polymyalgia rheumatica
• Polymyositis - adult
• Polyneuropathy - chronic inflammatory
• Polyneuropathy - sensorimotor
• Polyostotic fibrous dysplasia
• Polyps - colorectal
• Pompholyx
• Pontiac fever
• Popliteal cyst
• Pork tapeworm
• Porphyria
• Porphyria
• Port-wine stain
• Portacaval shunt
• Post-cardiac injury syndrome
• Post-infectious glomerulonephritis
• Post-MI pericarditis
• Post-partum depression
• Post-splenectomy syndrome
• Post-streptococcal GN
• Post-traumatic stress disorder
• Postcardiotomy pericarditis
• Posterior circulation ischemia.
• Posterior fossa tumor
• Posterior tongue carcinoma
• Posterior uveitis
• Postherpetic neuralgia
• Postmenopause
• Postpartum hypopituitarism
• Postpartum pituitary insufficiency
• Postprandial hypotension
• Postural kyphosis
• Potassium - high
• Potassium - low
• Potassium wasting
• Potter syndrome
• Prader-Willi syndrome
• Precancerous changes of the cervix
• Precocious puberty
• Preeclampsia
• Preemie
• Preexcitation syndrome
• Pregnancy - teenage
• Pregnancy mask
• Pregnancy-induced hypertension
• Premature beats
• Premature closure of sutures
• Premature contraction
• Premature ejaculation
• Premature infant
• Premature ovarian failure
• Premature separation of placenta
• Premenstrual dysphoric disorder
• Premenstrual syndrome
• Prerenal azotemia
• Presbycusis
• Presbyopia
• Preseptal cellulitis
• Pressure-related ear pain
• Preterm infant
• Primary adrenal insufficiency
• Primary alveolar hypoventilation
• Primary amenorrhea
• Primary amyloidosis
• Primary biliary cirrhosis
• Primary cardiac amyloidosis - AL type
• Primary HIV infection
• Primary hyperparathyroidism
• Primary hypogonadism - male
• Primary Insomnia
• Primary intestinal pseudo-obstruction
• Primary liver cell carcinoma
• Primary lymphoma of the brain
• Primary lymphoma of the central nervous system
• Primary myelofibrosis
• Primary or secondary fibrinolysis
• Primary polycythemia
• Primary progressive aphasia
• Primary pulmonary hypertension
• Primary sclerosing cholangitis
• Primary syphilis
• Primary thrombocythemia
• Primitive neuroectodermal tumors (PNET)
• Prinzmetal's angina 
• Processus vaginalis
• Proctitis
• Proctitis - streptococcal
• Progeria
• Progressive angina
• Progressive massive fibrosis
• Progressive multifocal leukoencephalopathy
• Progressive neuropathic (peroneal) muscular atrophy
• Progressive septic granulomatosis
• Progressive supranuclear palsy
• Progressive systemic sclerosis
• Prolactin-secreting ademoma of the pituitary
• Prolactinoma
• Prolactinoma - females
• Prolactinoma - males
• Prolapsed intervertebral disk
• Prolapsing mitral leaflet syndrome
• Pronation of feet
• Prostate - enlarged
• Prostate cancer
• Prostatism
• Prostatitis - acute
• Prostatitis - chronic
• Prostatitis - nonbacterial
• Prostatodynia
• Protein malnutrition
• Protein-calorie malnutrition
• Prothrombin deficiency
• Proximal renal tubular acidosis
• Prune belly syndrome
• Pseudo-ainhum
• Pseudo-obstruction - intestinal
• Pseudofolliculitis barbae
• Pseudogout
• Pseudohermaphroditism
• Pseudohypertrophic muscular dystrophy
• Pseudohypoparathyroidism
• Pseudomembranous colitis
• Pseudotumor cerebri
• Psittacosis
• Psoriasis
• Psoriasis - guttate
• Psoriatic arthritis
• PSVT
• Psychopathic personality
• Psychosis
• Psychotic
• Psychotic depression
• Pterygium
• Ptosis
• PTSD
• Pubertas praecox
• Pubic lice
• Pulled elbow
• Pulmonary actinomycosis
• Pulmonary alveolar proteinosis
• Pulmonary arterial hypertension
• Pulmonary arteriovenous fistula
• Pulmonary aspergilloma (mycetoma)
• Pulmonary aspergillosis - allergic bronchopulmonary type
• Pulmonary aspergillosis - invasive
• Pulmonary atresia
• Pulmonary edema
• Pulmonary embolus
• Pulmonary fibrosis
• Pulmonary fibrosis - from asbestos exposure
• Pulmonary histiocytosis X
• Pulmonary infiltrates with eosinophilia
• Pulmonary Langerhans cell granulomatosis
• Pulmonary nocardiosis
• Pulmonary renal syndrome
• Pulmonary tuberculosis
• Pulmonary valve stenosis
• Pulmonary vaso-occlusive disease
• Pulmonary veno-occlusive disease
• Pulseless disease
• Pupil-involving third cranial nerve palsy
• Pupil-sparing third cranial nerve palsy
• Purulent pericarditis
• PVB (premature ventricular beat)
• PVC (premature ventricular contraction)
• PVD
• PVL
• Pyelonephritis
• Pyloric stenosis
• Pyogenic granuloma
• Pyogenic liver abscess
• Pyorrhea - gum disease
• Pyruvate kinase deficiency