- Paclitaxel
- Paget's disease of bone
- Paget-Schroetter syndrome
- Pain
- Pain disorders
- Painful menstruation
- Painful sexual intercourse
- Pain syndrome, complex regional
- Palilalia
- Palindromic rheumatism
- Palpitations
- Palsy
- Pamelor
- Pamidronate
- Panaeolus
- Panbronchiolitis, diffuse
- Pancreatic B cell tumors, hypoglycemia from
- Pancreatic cancer
- Pancreatitis
- Pancytopenia
- Panic
- Panic disorder
- Papanicolaou smears, classification of
- Papillary carcinoma, of thyroid
- Papillary necrosis
- Papilledema
- Papular lesions
- Papules and nodules
- Paracoccidioides brasiliensis
- Paracoccidioidomycosis
- Paragonimiasis
- Paragonimus skrjabini
- Paragonimus westermani
- Paralysis
- Paralysis, periodic
- Paralytic shellfish poisoning
- Paraneoplastic syndromes
- Paraneoplastic syndromes, in bronchogenic carcinoma
- Paranoid disorder
- Paraphilias
- Parapneumonic effusion, uncomplicated
- Paraquat poisoning
- Parasites involving the lung
- Parasomnias
- Parathyroid hormone (PTH)
- Paresthesias
- Parkinson's disease, anticholinergic drugs for
- Parkinsonism
- Parnate
- Paronychia
- Paroxetine
- Paroxysmal nocturnal hemoglobinuria
- Paroxysmal supraventricular tachycardia
- Partial seizures
- Pasteurella tularensis
- Patanol
- Patellar tendinitis
- Patellofemoral syndrome
- Patent ductus arteriosus
- Pauci-immune glomerulonephritis
- Paxil
- PCP
- PDA
- PE
- Pediculosis
- Pedophilia
- Pegfilgrastim
- Pellagra
- Pelvic inflammatory disease (PID)
- Pelvic mass
- Pelvic pain, acute
- Pelvic pain, chronic
- Pemphigoid, bullous
- Pemphigus
- Penbutolol
- Penicillinase-producing staphylococcus, drugs for
- Penicillium marneffei
- Penicillium Marneffei Infection
- Penile pain
- Penile papules & other lesions
- Penile ulcer
- Penlac
- Pentamidine
- Peptic ulcer disease
- Peptide hormone inhibitor
- Peptostreptococcus
- Percocet
- Percodan
- Perianal abscess
- Perianal Abscess & Fistula
- Perianal fistula
- Pericardial effusion
- Pericardial effusion, malignant
- Pericarditis
- Pericarditis, acute
- Pericarditis, restrictive
- Perilymphatic fistula
- Perindopril
- Periodic paralysis
- Periorbital edema or swelling
- Peripheral arterial disease
- Peripheral neuronal antagonists
- Peripheral neuropathy (mononeuropathy)
- Peripheral neuropathy (polyneuropathy)
- Peripheral vascular diseases
- Peripheral vestibulopathy
- Peritoneal carcinomatosis
- Peritoneal dialysis, for hyperkalemia
- Peritoneal effusion, malignant
- Peritoneal mesothelioma
- Peritonitis
- Peritonsillar abscess
- Permitil
- Pernicious anemia
- Peroneal nerve, common, palsy
- Peroneal nerve, common, palsy of
- Perphenazine
- Persistent anovulation
- Personality disorders
- Pertussis
- Pesticide poisoning
- Petechiae
- Petit mal seizure
- Petroleum distillate poisoning
- PFTs, DLCO (diffusion capacity) decreased
- PFTs, DLCO (diffusion capacity) increased
- PFTs, obstructive disease
- PFTs, restrictive disease
- Pharyngitis
- Phenelzine
- Phenindione, in breast-feeding women
- Phenobarbital
- Phenol poisoning
- Phenothiazines
- Phenytoin
- Pheochromocytoma
- Phialophora
- Phobic disorder
- Phonic tics
- Phosphatase, alkaline
- Phosphate, increased serum
- Phosphate deficiency, in osteomalacia
- Phosphorus, decreased serum
- Photodermatitis
- Photodistributed rashes
- Photophobia
- Photosensitivity, as drug reaction
- Pickwickian syndrome
- PID
- Pigeon breeder's disease
- Pigmentary changes, as drug reaction
- Pigmented lesions
- Pill-induced esophagitis
- Pilocarpine HCl
- Pilocarpine HCl gel
- Pilocarpine ocular therapeutic system
- Pimecrolimus
- Pindolol
- Pineal tumor
- Pine oil poisoning
- Pink eye (conjunctivitis)
- Pinworm infection
- Pioglitazone
- Pirbuterol
- Piroxicam
- Pituitary hormones
- Pituitary mass
- Pit viper bite
- Pityriasis rosea
- Pityriasis rosea like eruptions, as drug reaction
- Pityriasis versicolor
- Plague
- Plantar fasciitis
- Plasmodium falciparum malaria
- Plasmodium malariae malaria
- Plasmodium ovale malaria
- Plasmodium vivax malaria
- Platelet disorders, qualitative
- Platypnea
- Plendil
- Pleural effusions
- Pleural fluid exudates
- Pleural fluid transudates, causes of
- Pleural plaques (masses or thickening)
- Pleurisy
- Pleuritis
- Plexopathies
- Plicamycin
- Plummer-Vinson syndrome
- PMS
- Pneumaturia
- Pneumococcal meningitis
- Pneumococcal pneumonia
- Pneumococcus
- Pneumoconiosis
- Pneumocystis jiroveci pneumonia
- Pneumocystis pneumonia
- Pneumonia
- Pneumonitis
- Pneumothorax, spontaneous
- Podagra
- Poisoning
- Poliomyelitis
- Polyangiitis, microscopic
- Polyarteritis, Takayasu's arteritis
- Polyarteritis nodosa
- Polychondritis, relapsing
- Polycystic kidney disease
- Polycystic ovary syndrome
- Polycythemia
- Polycythemia vera, treatment for
- Polydipsia
- Polymyalgia rheumatica
- Polymyositis
- Polymyxin B sulfate 500,000 units
- Polymyxin B sulfate sterile
- Polyneuropathies
- Polyneuropathies, chronic inflammatory
- Polyposis, familial adenomatous
- Polyps
- Polyuria
- Pompholyx
- Pompholyx (Dyshidrotic Eczema)
- Ponstel
- Popliteal aneurysm
- Popliteal artery occlusion
- Porcelain gallbladder
- Pork tapeworm infection
- Porphyria, acute intermittent
- Porphyria, unsafe and probably safe drugs for
- Porphyria cutanea tarda
- Portal hypertension
- Portal vein occlusion, ascites from
- PORT prediction rule, scoring system for risk class assignment for
- PORT risk class 30-day morality rates and site of care recommendations
- Positional vertigo
- Postcholecystectomy
- Postcholecystectomy pain
- Postherpetic neuralgia
- Postinfectious glomerulonephritis
- Postmenopausal vaginal bleeding
- Postoperative pneumonia, antimicrobial therapy for, pending organism ID
- Postpartum cardiomyopathy
- Postpartum thyroiditis
- Postprandial hypoglycemia
- Posttraumatic Stress Disorder
- Posttraumatic stress disorder (PTSD)
- Postural syncope
- Potassium, decreased serum
- Potassium, increased, emergency treatment
- Potassium, increased serum
- Potassium-sparing agents, therapy individualization with
- Pott's disease
- Pramoxine hydrochloride
- Prandin
- Pravachol
- Pravastatin
- Prax
- Prazosin
- Precholecystectomy
- Precose
- Pred Mild
- Prednicarbate
- Prednisolone, for asthma
- Prednisolone acetate suspension
- Prednisolone sodium phosphate solution
- Prednisone
- Preeclampsia
- Preeclampsia-eclampsia, mild to moderate vs. severe, indicators of
- Pregnancy
- Premature ovarian failure
- Premenopausal vaginal bleeding, abnormal
- Premenstrual syndrome (PMS)
- Pressure sores
- Preterm labor
- Prevotella, oropharyngeal strains of, drugs for
- Prevotella melaninogenica
- Primary alveolar hypoventilation
- Primary biliary cirrhosis
- Primary lateral sclerosis
- Primary sclerosing cholangitis
- Primidone
- Prinivil
- Prion diseases
- Procainamide
- Procarbazine
- Procardia
- Procardia XL
- Prochlorperazine
- Proctitis
- Proctocolitis
- Progestins
- Progressive bulbar palsy
- Progressive spinal muscular atrophy
- Prolactin, increased
- Prolactin, increased, causes of
- Prolactinoma
- Prolapse
- Prolixin
- Promethazine
- Pronator teres syndrome
- Propafenone
- Prophylaxis
- Propionibacterium acnes
- Propoxyphene poisoning
- Propranolol
- Proptosis (exophthalmos)
- Prosom
- Prostaglandin analogs, topical ophthalmic
- Prostate cancer
- Prostate pain
- Prostatic hyperplasia, benign
- Prostatitis, acute bacterial
- Prostatitis, chronic bacterial
- Prostatodynia
- Prosthetic valve endocarditis, treatment of
- Protease inhibitors
- Protein, total
- Protein-losing enteropathy
- Proteinosis, pulmonary alveolar
- Proteinuria
- Proteinuria, nephrotic syndrome
- Proteus
- Proteus mirabilis, drugs for
- Proteus vulgaris
- Prothrombin time (PT)
- Proton pump inhibitors
- Protopic, as topical dermatologic agent
- Protriptyline
- Proventil HFA
- Proventil Repetab
- Prozac
- Pruritus
- Pruritus, anogenital
- Pseudoallergic reactions
- Pseudoaneurysm, femoral
- Pseudobulbar palsy
- Pseudofolliculitis
- Pseudogout (CPPD)
- Pseudohyponatremia
- Pseudohypoparathyroidism
- Pseudomembranous colitis
- Pseudomonas
- Pseudomonas aeruginosa
- Pseudomonas aeruginosa pneumonia
- Pseudotumor cerebri
- Psilocybe orellanus poisoning
- Psittacosis
- Psoriasiform eruptions, as drug reaction
- Psoriasis
- Psoriatic arthritis
- Psoriatic arthritis, diagnostic value of joint pattern in
- Psychosis, agents for, 1286
- Psychosomatic disorder
- Psychotic disorder
- PT (prothrombin time)
- Ptosis
- PTT increased
- Pubic lice
- Puffer fish poisoning
- Pulmicort Turbuhaler
- Pulmonary alveolar proteinosis
- Pulmonary disease
- Pulmonary edema, acute
- Pulmonary edema, acute, high-altitude
- Pulmonary embolism (PE)
- Pulmonary fibrosis, idiopathic
- Pulmonary hemosiderosis, idiopathic
- Pulmonary hypertension
- Pulmonary hypertension, primary
- Pulmonary infarction, pleural effusion in
- Pulmonary insufficiency
- Pulmonary nodule
- Pulmonary nodules (multiple)
- Pulmonary radiation fibrosis
- Pulmonary-renal syndromes
- Pulmonary stenosis
- Pulmonary thromboembolism
- Pulmonary tuberculosis, active
- Pulmonary tuberculosis, latent
- Pulmonary veno-occlusive disease
- Pulse, absent or decreased
- Pulseless disease
- Pulseless electrical activity (PEA)
- Pulse pressure, wide
- Pulsus alternans
- Pulsus paradoxus
- Pure estrogen receptor antagonist
- Pure papillary carcinoma, of thyroid
- Purine content of foods
- Purpura
- Pustular lesions
- Pustules
- Pyelonephritis
- Pyoderma gangrenosum
- Pyogenic liver abscess
- Pyrazinamide
- Pyridoxine deficiency
- Pyuria