• SIADH see Dilutional hyponatremia (SIADH)
• Sialogram
• Sialography see Sialogram
• Sialolithiasis see Salivary duct stones
• Sibilant rhonchi see Wheezing
• Sick sinus syndrome
• Sickle cell anemia
• Sickle cell anemia - resources
• Sickle cell disease see Sickle cell anemia
• Sickle cell test
• Sickledex see Sickle cell test
• Sickness and chicken soup see Chicken soup and sickness
• Side pain see Flank pain
• Sideropenic dysphagia see Plummer-Vinson syndrome/esophageal web
• SIDS see Sudden infant death syndrome
• SIDS - resources
• Sigmoidoscopy
• Silent ear infection see Otitis media with effusion
• Silent otitis media see Otitis media with effusion
• Silicoproteinosis see Silicosis - acute
• Silicosis
• Silicosis - acute
• Silver syndrome see Russell-Silver syndrome
• Silver-Russell syndrome see Russell-Silver syndrome
• Simian crease
• Simple carbohydrates see Carbohydrates
• Simple pulmonary eosinophilia (Loeffler's syndrome)
• Simple seizure see Partial (focal) seizure
• Simple sugars see Carbohydrates
• Sinequan see Doxepin overdose
• Singapore hemorrhagic fever see Dengue hemorrhagic fever
• Single palmar crease see Simian crease
• Singultus see Hiccups
• Sinus infection see Sinusitis
• Sinuses X-ray
• Sinusitis
• Sinusitis - acute see Sinusitis
• Sinusitis - chronic
• Siphonaptera see Fleas
• Sipple's syndrome see Multiple Endocrine Neoplasia (MEN) II
• Sitz bath
• Sjogren syndrome
• Skeletal limb abnormalities
• Skeletal survey see X-ray - skeleton
• Skin - abnormally dark or light
• Skin - clammy
• Skin - dry see Dry skin
• Skin - oily see Oily skin
• Skin - yellow see Jaundice - yellow skin
• Skin abscess
• Skin and sunburn treatments see Aloe
• Skin autografting see Skin graft
• Skin biopsy see Skin lesion biopsy
• Skin biopsy Gram stain see Gram stain of skin lesion
• Skin blushing/flushing
• Skin bumps - acne-like see Comedones
• Skin cancer
• Skin cancer - basal cell see Basal cell carcinoma
• Skin cancer - melanoma see Melanoma
• Skin cancer - squamous cell see Squamous cell cancer
• Skin cancer and fair skinned people see Fair skin cancer risks
• Skin cancer locations
• Skin care and incontinence
• Skin characteristics in newborns
• Skin color - patchy
• Skin discoloration - bluish
• Skin flaking see Scales
• Skin graft
• Skin growths - fatty see Xanthelasma and Xanthoma
• Skin hemorrhages see Purpura
• Skin infection - bacterial see Cellulitis
• Skin infection - fungal see Cutaneous candidiasis
• Skin infection - staphylococcal see Carbunculosis
• Skin infection - yeast see Cutaneous candidiasis
• Skin irritation from rubbing see Chafing
• Skin lesion see Rashes
• Skin lesion aspiration
• Skin lesion biopsy
• Skin lesion Gram stain see Gram stain of skin lesion
• Skin lesion KOH exam
• Skin lesion of blastomycosis
• Skin lesion of coccidioidomycosis
• Skin lesion of Histoplasmosis
• Skin lumps
• Skin lumps - concerns
• Skin or mucosal biopsy culture
• Skin pale or gray see Paleness
• Skin pigment see Melanin
• Skin rash see Rashes
• Skin redness or inflammation see Rashes
• Skin sagging treatment
• Skin self-exam
• Skin smoothing surgery
• Skin spots - aging see Liver spots
• Skin spots - red see Bleeding into the skin
• Skin tags see Cutaneous skin tags
• Skin test anergy
• Skin tests - allergy see Allergy testing
• Skin transplant see Skin graft
• Skin turgor
• Skinny-needle biopsy see Thyroid nodule fine needle aspirate
• Skull fracture
• Skull radiography see Skull X-ray
• Skull X-ray
• Slapped cheek see Fifth disease
• SLE see Systemic lupus erythematosus
• SLE - support group see Lupus - resources
• Sleep - natural short sleeper see Natural short sleeper
• Sleep apnea see Obstructive sleep apnea
• Sleep apnea - central see Central sleep apnea
• Sleep apnea syndrome see Obstructive sleep apnea
• Sleep disorders
• Sleep disorders in the elderly
• Sleep issues see Insomnia concerns
• Sleep paralysis - isolated see Isolated sleep paralysis
• Sleep studies see Polysomnogram
• Sleep terror disorder see Night terror
• Sleep walking
• Sleepiness - during the day see Drowsiness
• Sleeping difficulty
• Sleeping sickness
• Sleeplessness see Sleeping difficulty
• Sleep-wake syndrome - irregular see Irregular sleep-wake syndrome
• Sleepwalking and children
• Sling - instructions see How to make a sling
• Slip see Slipped capital femoral epiphysis
• Slipped capital femoral epiphysis
• Slipped disk see Herniated nucleus pulposus (slipped disk)
• Slit-lamp exam
• Slow involuntary movements of large muscle groups see Movement - uncontrolled or slow
• Slow rate of growth see Delayed growth
• Slurred speech see Speech impairment (adult)
• SMA20 see CHEM-20
• SMA7 see CHEM-7
• SMAC20 see CHEM-20
• SMAC7 see CHEM-7
• Small bowel bacterial overgrowth
• Small bowel biopsy
• Small bowel enema see Enteroclysis
• Small bowel resection
• Small bowel tissue biopsy smear
• Small cell lung cancer see Lung cancer - small cell
• Small for gestational age (SGA)
• Small intestinal aspirate and culture
• Small intestine insufficiency see Short bowel syndrome
• Small intestine surgery see Small bowel resection
• Small non-cleaved cell lymphoma see Burkitt lymphoma
• Smallpox
• Smashed fingers
• Smear of duodenal fluid aspirate
• Smell - impaired
• Smokeless snuff see Smoking and smokeless tobacco
• Smoker's keratosis see Leukoplakia
• Smoking - tips on how to quit
• Smoking and smokeless tobacco
• Smoking cessation see Smoking - tips on how to quit
• Smoking hazards
• Snake bite
• Snake bite poison
• Sneezing
• Snoring
• Soap ingestion
• Social phobia
• Sociopathic personality see Antisocial personality disorder
• Sodium - serum see Serum sodium
• Sodium - urine
• Sodium bicarbonate see Baking powder overdose
• Sodium bisulfate
• Sodium borate overdose
• Sodium carbonate
• Sodium hydroxide
• Sodium hypochlorite
• Sodium in diet
• Sodium phosphate overdose
• Sodium salicylate overdose
• Sodoku see Rat-bite fever
• Soft spot - bulging see Fontanelles - bulging
• Soft spot - large see Fontanelles - excessively large
• Soft spot - sunken see Fontanelles - sunken
• Soft tissue gangrene see Necrotizing soft tissue infection
• Soft tissue sarcoma see Rhabdomyosarcoma
• Soiling see Encopresis
• Solanum tuberosum see Potato - green tubers and sprouts
• Solar keratosis see Actinic keratosis
• Solder
• Solitary pulmonary nodule
• Soluble vs. insoluble fiber
• Somatic see Systemic
• Somatization disorder
• Somatoform pain disorder
• Somatotroph adenoma see Acromegaly
• Sominex see Diphenhydramine hydrochloride overdose
• Somnambulism see Sleep walking
• Somnambulism see Sleepwalking and children
• Somnolence see Drowsiness
• Sonogram see Ultrasound
• Sorbic acid overdose
• Sore throat
• Sores on the female genitals see Genital sores - female
• Sores or ulcers on the male genitals see Genital sores - male
• Soy
• Spasm of the esophagus see Esophageal spasm
• Spasmodic bladder see Urge incontinence
• Spasmodic croup see Croup
• Spasmodic dysphonia
• Spasms of the hands or feet see Hand or foot spasms
• Spasmus nutans
• Spastic colon see Irritable bowel syndrome (functional bowel)
• Spasticity
• Special medical power of attorney see Advanced care directives
• Specks in the eye see Eye floaters
• Spectracide see Diazinon
• Speech disorders
• Speech impairment (adult)
• Sperm count see Semen analysis
• Spermatocele see Scrotal masses
• Spherocytosis see Congenital spherocytic anemia
• Sphingomyelinase deficiency (type A Niemann-Pick disease) see Niemann-Pick
• Spider angioma
• Spider bite see Insect bites and stings
• Spider fingers see Arachnodactyly
• Spielmeyer-Vogt see Neuronal ceroid lipofuscinoses (NCLS)
• Spina bifida see Myelomeningocele (children)
• Spina bifida - resources
• Spina bifida repair see Meningocele repair
• Spinal abscess see Epidural abscess
• Spinal cord abscess
• Spinal cord compression or injury see Spinal cord trauma
• Spinal cord scan see RHISA scan
• Spinal cord trauma
• Spinal CT see Lumbosacral spine CT
• Spinal curvature see Scoliosis
• Spinal fluid coccidioides antibody test see CSF coccidioides complement fixation
• Spinal fluid culture see CSF culture
• Spinal fluid smear see CSF smear
• Spinal fluid specimen see CSF collection
• Spinal fusion
• Spinal injury - resources
• Spinal muscular atrophy
• Spinal stenosis
• Spinal surgery - cervical
• Spinal surgery - lumbar
• Spinal tap see CSF collection
• Spinal tumor
• Spinal/neck injury
• Spine MRI
• Spine X-ray see Thoracic spine X-ray
• Spinocerebellar degeneration see Friedreich's ataxia
• Spirillary fever see Rat-bite fever
• Spirogram see Pulmonary function tests
• Spirometry see Pulmonary function tests
• Spitting up
• Spitting up blood see Coughing up blood
• Spleen enlargement see Splenomegaly
• Spleen removal
• Splenectomy see Spleen removal
• Splenectomy - post-surgery syndrome see Post-splenectomy syndrome
• Splenic infarction
• Splenomegalic polycythemia see Polycythemia vera
• Splenomegaly
• Splint - instructions see How to make a splint
• Splinter hemorrhages
• Splinter removal
• Spondylarthropathy see Ankylosing spondylitis
• Spondylitis see Ankylosing spondylitis
• Spondylolisthesis
• Spongy degeneration of the brain see Canavan disease
• Spontaneous abortion see Miscarriage
• Spontaneous bacterial peritonitis (SBP) see Peritonitis - spontaneous
• Spontaneous pneumothorax
• Spoon nails see Nail abnormalities
• Sporadic primary pulmonary hypertension see Primary pulmonary hypertension
• Spores
• Sporotrichosis
• Sports cream overdose
• Spotted fever see Rocky Mountain spotted fever
• Spotting see Vaginal bleeding between periods
• Sprains
• Sprue see Celiac disease - sprue
• Sputum culture see Routine sputum culture
• Sputum DFA (direct fluorescent antibody)
• Sputum Gram stain
• Sputum smear (KOH test)
• Sputum stain for mycobacteria

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