Conditions beginning with P
- Paget disease of the nipple
- Pallister Killian syndrome
- Pancoast syndrome (apical lung tumor)
- Pancreatic cancer (tumor)
- Pancreatitis (pancreas inflammation)
- Pancreatitis, chronic (pancreas inflammation)
- Panhypopituitarism (hypopituitarism)
- Panic disorder
- Paralytic Ileus (intestinal paralysis)
- Parasite infections
- Parkinson's disease
- Paronychia (nail bed infection)
- Parotitis (salivary gland inflammation)
- Patellar (knee cap) tendon rupture
- Patellar dislocation (knee cap dislocation)
- PCP (phencyclidine abuse)
- Pelvic inflammatory disease (PID)
- Pemphigus
- Penis carcinoma (tumor)
- Peptic ulcer (ulcer in the stomach or duodenum)
- Pepto Bismol or Kaopectate ingestion (bismuth)
- Perforated septum (hole in nasal septum)
- Pericarditis (heart sac inflammation)
- Periodontitis (gum inflammation)
- Periorbital cellulitis (infection around eye)
- Peripheral nerve transection (laceration)
- Peripheral neuropathy (nerve dysfunction)
- Peripheral vascular disease (blocked arteries)
- Peritonitis (abdominal cavity inflammation)
- Peritonsillar abscess (tonsil abscess)
- Pernicious anemia
- Personality disorder
- Pesticide poisoning (organophosphate poisoning)
- Pharyngeal pouch (Zenker's diverticulum)
- Pharyngitis (throat infection)
- Pheochromocytoma (adrenal gland tumor)
- Phimosis
- Phobias (irrational fear)
- Pickwickian syndrome (severe obesity)
- Pilonidal cyst (buttocks cyst)
- Pinguecula
- Pinworms
- Pituitary tumor
- Pityriasis rosea (inflammatory skin rash)
- Placenta previa (placenta covers cervix)
- Placental abruption (placenta separation)
- Plague (bubonic plague, bacteria yersinia infection)
- Plantar fasciitis (heel spurs)
- Plantar wart (human papilloma virus infection)
- Pleural effusion (abnormal chest fluid)
- Pleuritis (inflammation of the lung's lining, pleurisy)
- Pneumoconiosis (lung disease)
- Pneumocystis pneumonia (PCP)
- Pneumonia (lung infection)
- Pneumothorax (collapse of lung)
- Poison ivy (poison oak, poison sumac)
- Poisoning
- Poliomyelitis (polio)
- Polycystic kidney disease
- Polycystic ovarian syndrome (PCOS)
- Polycythemia vera (increased blood cells)
- Polymyalgia rheumatica (PMR)
- Polymyositis
- Polyphagia (overeating)
- Porphyria
- Post concussive syndrome (post head injury)
- Post herpetic neuralgia
- Post nasal drip
- Post-traumatic stress disorder (PTSD)
- Posterior inferior cerebellar artery syndrome
- Posterior vitreous detachment
- Postpartum psychosis
- Postural hypotension (orthostatic hypotension)
- Preeclampsia (toxemia of pregnancy)
- Pregnancy
- Premature ejaculation
- Premature ovarian failure
- Premenstrual dysphoric disorder (PMDD)
- Premenstrual syndrome (PMS)
- Prescription drug abuse
- Preseptal (nasal septum) hematoma
- Priapism (persistent erection)
- Primary affective disorder (depression)
- Primary dysmenorrhea (painful menstruation)
- Primary insomnia (difficulty sleeping)
- Primary sclerosing cholangitis (bile duct disease)
- Prinzmetal angina (heart artery spasm)
- Prostate cancer
- Prostatectomy (surgical prostate removal)
- Prostatitis (prostate infection)
- Pruritus ani (buttocks itching)
- Pseudogout (calcium deposit arthritis)
- Pseudomonas infection
- Pseudotumor cerebri (elevated brain pressure)
- Psoriasis
- Psoriatic arthritis
- Psychosis
- Pterygium
- Pubic lice
- Puerperal (postpartum) depression
- Pulmonary edema (abnormal lung fluid)
- Pulmonary embolism (blood clot of lung)
- Pulmonary fibrosis (lung scarring)
- Pulmonary hypertension (blood pressure)
- Pulpitis (dental root inflammation)
- Puncture wound
- Puncture wound, ankle
- Puncture wound, arm
- Puncture wound, ear
- Puncture wound, eyelid
- Puncture wound, face
- Puncture wound, finger
- Puncture wound, foot
- Puncture wound, hand
- Puncture wound, knee
- Puncture wound, leg
- Puncture wound, lip
- Puncture wound, mouth
- Puncture wound, scalp
- Puncture wound, skin
- Puncture wound, toe
- Pyelonephritis (kidney infection)
- Pyomyositis (muscle infection)