Disease Reference Index - S

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• Z

• Salivary duct stones
• Salivary gland disorders
• Salivary gland infections
• Salivary gland tumors
• Salmon patch
• Salmonella enterocolitis
• Salmonellosis
• Salpingitis
• Salpingo-oophoritis
• Salpingo-peritonitis
• San Joaquin Valley fever
• Sanfilippo syndrome
• Sarcoidosis
• Sarcoidosis - nervous system
• Sarcoma botryoides
• Sarcoptes scabiei
• SARS
• Scabies
• Scalded skin syndrome
• Scar - hypertrophic
• Scarlatina
• Scarlet fever
• SCD
• SCFE
• Schatzki's ring
• Scheie syndrome
• Scheuermann's disease
• Schistosomiasis
• Schizoaffective disorder
• Schizoid personality disorder
• Schizophrenia
• Schizophrenia - disorganized type
• Schizophrenia - paranoid type
• Schizotypal personality disorder
• Sciatic nerve dysfunction
• Sciatica
• SCLC
• Scleritis
• Scleroderma
• Scleroma
• Sclerosing cholangitis
• Scoliosis
• Scorbutus
• Scrofula
• Scrotal masses
• Scrotum - empty (anorchia)
• Scrotum - empty (undescended testes)
• Scurvy
• Seasonal affective disorder
• Seatworm
• Sebaceous cyst
• Seborrheic dermatitis
• Seborrheic eczema
• Seborrheic keratosis
• Second cranial nerve atrophy
• Secondary amenorrhea
• Secondary aplastic anemia
• Secondary cardiac amyloidosis - AA type
• Secondary hyperparathyroidism
• Secondary hypogonadism
• Secondary parkinsonism
• Secondary peritonitis
• Secondary syphilis
• Secondary systemic amyloid
• Secretory otitis media
• Segmental glomerulosclerosis
• Seizure - absence
• Seizure - fever induced
• Seizure - generalized
• Seizure - grand mal
• Seizure - partial (focal)
• Seizure - petit mal
• Seizure - temporal lobe
• Seizure - tonic-clonic
• Seizure disorder
• Selective deficiency of IgA
• Selective mutism
• Semantic dementia
• Seminoma
• Senile amyloidosis
• Senile angioma
• Senile cerebral amyloid angiopathy
• Senile dementia/Alzheimer's type (SDAT)
• Senile keratosis
• Senile macular degeneration (SMD)
• Senile or solar lentigines
• Senior-Loken syndrome
• Sensorimotor polyneuropathy
• Separation anxiety
• Sepsis
• Sepsis of the newborn
• Septal hematoma
• Septic arthritis
• Septic shock
• Septicemia
• Septicemic plague
• Septicemic shock
• Serotonergic syndrome
• Serotonin syndrome
• Serous labyrinthitis
• Serous otitis media
• Sertoli-Leydig cell tumor
• Serum sickness
• Seventh cranial nerve palsy
• Seventh cranial nerve palsy due to birth trauma
• Severe acute respiratory syndrome (SARS)
• Sex - delayed ejaculation
• Sex cord tumor
• Sexual abuse - children
• Sexual apathy
• Sexual aversion
• Shaking palsy
• Sheehan syndrome
• Shigella enteritis
• Shigella gastroenteritis
• Shigellosis
• Shingles
• Shock - anaphylactic
• Shock - cardiogenic
• Shock - hypovolemic
• Shock liver
• Shock lung
• Short bowel syndrome
• Shortsightedness
• Shoulder impingement syndrome
• Shy-Drager syndrome
• Shy-McGee-Drager syndrome
• Sialadenitis
• Sialolithiasis
• Sick sinus syndrome
• Sickle cell anemia
• Sickle cell disease
• Sideropenic dysphagia
• SIDS
• Silent ear infection
• Silent otitis media
• Silicoproteinosis
• Silicosis
• Silicosis - acute
• Silver syndrome
• Silver-Russell syndrome
• Simple pulmonary eosinophilia
• Simple seizure
• Singapore hemorrhagic fever
• Sinus infection
• Sinus node dysfunction
• Sinusitis
• Sinusitis - acute
• Sinusitis - chronic (chronic sinus infection)
• Siphonaptera
• Sipple's syndrome
• Sjogren syndrome
• Skin abscess
• Skin cancer
• Skin cancer - basal cell
• Skin cancer - melanoma
• Skin cancer - squamous cell
• Skin growths - fatty
• Skin infection - bacterial
• Skin infection - fungal
• Skin infection - staphylococcal
• Skin infection - yeast
• Skin lesion of blastomycosis
• Skin lesion of coccidioidomycosis
• Skin lesion of histoplasmosis
• Skin spots - aging
• Skin tags
• Slapped cheek
• SLE
• Sleep - natural short sleeper
• Sleep apnea
• Sleep apnea - central
• Sleep disorders
• Sleep disorders in the elderly
• Sleep paralysis - isolated
• Sleep terror disorder
• Sleep walking
• Sleep-wake syndrome - irregular
• Sleeping sickness
• Slip
• Slipped capital femoral epiphysis
• Slipped disk
• Small bowel bacterial overgrowth
• Small cell lung cancer
• Small intestine insufficiency
• Small non-cleaved cell lymphoma
• Smallpox
• Smoker's keratosis
• Social phobia
• Sociopathic personality
• Sodoku
• Soft tissue gangrene
• Soft tissue sarcoma
• Soiling
• Solar keratosis
• Solitary pulmonary nodule
• Somatization disorder
• Somatoform pain disorder
• Somatotroph adenoma
• Somnambulism
• Spasm of the esophagus
• Spasmodic bladder
• Spasmodic croup
• Spasmodic dysphonia
• Spasmus nutans
• Spastic colon
• Spastic paralysis
• Speech disorders
• Spell - newborns
• Spermatocele
• Spherocytosis
• Sphingomyelinase deficiency
• Spider angioma
• Spielmeyer-Vogt
• Spina bifida
• Spinal abscess
• Spinal cord abscess
• Spinal cord injury
• Spinal cord trauma
• Spinal curvature
• Spinal muscular atrophy
• Spinal stenosis
• Spinal tumor
• Spinocerebellar degeneration
• Spirillary fever
• Splenectomy - post-surgery syndrome
• Splenic infarction
• Splenomegalic polycythemia
• Spondylarthropathy
• Spondylitis
• Spondylolisthesis
• Spongy degeneration of the brain
• Spontaneous abortion
• Spontaneous bacterial peritonitis (SBP)
• Spontaneous pneumothorax
• Sporadic primary pulmonary hypertension
• Sporotrichosis
• Spotted fever
• Sprue
• Squamous cell cancer - mouth
• Squamous cell cancer - penis
• Squamous cell skin cancer
• Squint
• SSPE
• St. Vitus dance
• Stable angina
• Stage 1 Lyme disease
• Stage 2 Lyme disease
• Stage 3 Lyme disease
• Stagnant loop syndrome
• Staph aureus food poisoning
• Staph skin infection
• Staphylococcal meningitis
• Staphylococcal scalded skin syndrome (SSS)
• Staphylococcal toxic shock syndrome
• Stasis dermatitis and ulcers
• Stasis syndrome
• Steely hair disease
• Stein-Leventhal syndrome
• Stenosis - renal artery
• Stereotypic movement disorder
• Sterile meningitis
• Stevens-Johnson syndrome
• Stiff heart syndrome
• Stiff lung
• Still's disease
• Still's disease - adult
• Stomach cancer
• Stomach flu 
• Stomach ulcer
• Stomatitis - herpetic
• Stomatitis - ulcerative
• Stones - bladder
• Stones - cystine
• Stones - kidney
• Storage pool disease
• Stork bite
• Strabismus
• Strawberry mark
• Strawberry nevus
• Streeter's dysplasia
• Strep throat
• Streptobacillary fever
• Streptobacillosis
• Streptococcal pharyngitis
• Streptococcal proctitis
• Streptococcus agalactiae
• Stress gastritis
• Stress incontinence
• Stress ulcer
• Stroke
• Stroke - hemorrhagic
• Stroke - ischemic
• Stroke related to cocaine use
• Stroke secondary to atherosclerosis
• Stroke secondary to atrial fibrillation
• Stroke secondary to cardiogenic embolism
• Stroke secondary to carotid dissection
• Stroke secondary to carotid stenosis
• Stroke secondary to FMD
• Stroke secondary to syphilis
• Stromal tumor
• Strongyloidiasis
• Struma lymphomatosa
• Stuart-Prower deficiency
• Sturge-Weber syndrome
• Stuttering
• Stuttgart disease
• Stye
• Subacute combined degeneration
• Subacute combined degeneration of the spinal cord
• Subacute lymphocytic thyroiditis
• Subacute sclerosing leukoencephalitis
• Subacute sclerosing panencephalitis
• Subacute thyroiditis
• Subarachnoid hemorrhage
• Subareolar abscess
• Subclavian artery occlusive syndrome
• Subclavian steal syndrome
• Subconjunctival hemorrhage
• Subcutaneous abscess
• Subdural effusion
• Subdural hematoma
• Subdural hematoma - chronic
• Subdural hemorrhage
• Subdural hemorrhage - chronic
• Subfalcine herniation
• Sublingual space infection
• Submandibular space infection
• Substernal thyroid
• Subungual warts
• Sudden infant death syndrome
• Suicide and suicidal behavior
• Sun-induced skin changes - keratosis
• Sun-induced skin changes - liver spots
• Superficial thrombophlebitis
• Superior vena cava obstruction
• Superior vena cava syndrome
• Supraglottitis
• Supranuclear ophthalmoplegia
• Supraventricular tachycardia
• SVC obstruction
• Swamp fever
• Sweating - excessive
• Swimmer's ear
• Swimmer's ear - chronic
• Swimmer's itch
• Swimmer's shoulder
• Swimming pool granuloma
• Swineherd's disease
• Sydenham chorea
• Sympathomimetic intoxication
• Syndrome - Scheie (MPS1S)
• Synovitis - toxic
• Syphilis
• Syphilis - primary
• Syphilis - secondary
• Syphilis - tertiary
• Syphilitic aneurysm
• Syphilitic aseptic meningitis
• Syphilitic myelopathy
• Syphilitic stroke
• Syringomyelia
• Syrinx
• Systemic histoplasmosis
• Systemic inflammatory response syndrome (SIRS)
• Systemic lupus erythematosus
• Systemic sclerosis (scleroderma)
• Systolic click-murmur syndrome