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| Health Topics A to Z IndexA | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | (0-9) - saccade initiation failure, congenital
- Sacral Agenesis, Congenital
- Sacral Nerve Root Cysts
- Sacral Regression
- Sacrococcygeal Chordoma
- Sacrococcygeal Teratoma
- SAD (Seasonal Affective Disorder)
- Saethre Chotzen Syndrome
- Safe Food Handling
- Safe Sex
- Safety Tips When Taking Anticoagulants
- Safety, Children
- Saint Anthony's Fire
- Sakati Syndrome
- Sakati-Nyhan Syndrome
- Salivary Gland Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Salivary Gland Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
- Salivary Gland Disease, CMV Type
- Salivary Gland Infection
- Salivosudoriparous Syndrome
- Salmonella Typhi Infection
- Salmonellosis
- SAM-e
- Sandhoff Disease
- Santavuori Disease
- Santavuori-Haltia Disease
- Sao Paulo Typhus
- Sarah's Story: Dealing With the Emotions From COPD
- Sarcoid of Boeck
- Sarcoidosis
- SARS (Severe Acute Respiratory Syndrome)
- Saw Palmetto
- SB
- SBMA
- SC Phocomelia Syndrome
- SC Syndrome
- SCA
- Scabies
- SCAD Deficiency
- SCAD Deficiency, Adult-Onset (Localized)
- SCAD Deficiency, Congenital (Generalized)
- SCADH Deficiency
- Scalded Skin Syndrome
- Scalp Defect Congenital
- Scalp Problems
- Scaphoid Fracture of the Wrist
- Scapula Elevata
- Scapuloperoneal Muscular Dystrophy
- Scapuloperoneal Syndrome, Myopathic Type
- Scarlet Fever
- Scarring hair loss
- Schaumann's Disease
- Schereshevkii-Turner Syndrome
- Schilder Disease
- Schimke Immuno-osseous Dysplasia
- Schindler Disease
- Schinzel Acrocallosal Syndrome
- Schinzel Giedion Syndrome
- Schinzel Syndrome
- Schinzel-Giedion Midface-Retraction Syndrome
- Schizophrenia
- Schizophrenia, Taking Medicines for
- Schlatter Disease
- Schmid metaphyseal dysostosis
- Schmid-Fraccaro Syndrome
- Schmidt Syndrome
- Schnitzler Syndrome
- Schnitzler’s Syndrome
- Schonlein-Henoch Purpura
- Schwannoma of the Acoustic Nerve
- Schwartz Jampel Syndrome
- Schwartz-Jampel-Aberfeld Syndrome
- Sciatica
- SCID
- SCKL
- Scleral buckling surgery for retinal detachment
- Sclerocystic Ovarian Disease
- Scleroderma
- Sclerosing Panniculitis
- Sclerosis, Diffuse Familial Brain
- Sclerosis, Familial Progressive Systemic
- Sclerotherapy for varicose veins
- SCLS
- Scoliosis
- Scoliosis, Back Brace for
- Scoliosis, Brace for
- Scoliosis, Orthotic Brace for
- Scoliosis, Spinal Fusion for
- Scoliosis: Should I (or my child) have surgery?
- Scott Aarskog syndrome
- Scott Craniodigital Syndrome
- Scott Syndrome
- Scrapes
- Screening for Disease
- Screening Tests, Which do You Need?
- Scrotal Tongue
- SCS
- SD
- SDYS
- Sea Lice
- Seabather's Eruption
- Seafood Allergy
- Seasickness
- Seasonal Affective Disorder (SAD)
- Seasonal affective disorder: Using light therapy
- Seasonal Conjunctivitis
- Seatworm Infection
- Sebaceous Nevus Syndrome
- Seborrheic Keratosis
- Seborrheic Warts
- Seckel Syndrome
- Seckel Type Dwarfism
- Seckel Type Primordial Dwarfism
- Secondary Blepharospasm
- Secondary Intrcranial Hypertension
- Secondary Non-tropical Sprue
- Secondary Parkinsonism
- Secreto-inhibitor-xerodermostenosis
- SED Congenital
- SED Tarda
- SEDC
- Segawa Disease
- Segawa Syndrome
- Segmental Cranial Dystonia
- Seitelberger Disease
- Seizures
- Seizures
- Seizures (Epilepsy)
- Selected Vegetables/Sun's Soup (PDQ®): Complementary and alternative medicine - Health Professional Information [NCI]
- Selected Vegetables/Sun's Soup (PDQ®): Complementary and alternative medicine - Patient Information [NCI]
- Selective dorsal rhizotomy
- Self-Care Checklist
- Self-Care Tools
- Self-esteem, Helping your child build
- Semilobar Holoprosencephaly
- Seminoma Testicular Cancer, Stage I, Deciding About Treatment
- Semont and Epley maneuvers for vertigo
- Senile Dermatitis Herpetiformis
- Senile Keratosis
- Senile Warts
- Senior Health
- Senior-Loken Syndrome
- Sennetsu Fever
- Sennetsu Type
- Sensory Integration Dysfunction
- Sensory Radicular Neuropathy, Recessive
- Separated Shoulder
- Sepsis of the Newborn
- Septic Arthritis
- septooptic dysplasia
- Septoplasty
- Serous Circumscribed Meningitis
- Serpiginous Choroidopathy
- Serum Carnosinase Deficiency
- Serum Protease Inhibitor Deficiency
- Setleis Syndrome
- Seven Day Fever, Dengue Type
- Seven Day Fever, Leptospirosis
- Severe Acute Respiratory Syndrome (SARS)
- Severe Combined Immunodeficiency
- Severe Combined Immunodeficiency, Nezelof Type
- severe functional dyspepsia
- severe myoclonic epilepsy in infancy (SMEI)
- Sex Education, Talking With Children/Teenagers
- Sexual Abuse or Assault (Rape)
- Sexual Abuse, Child
- Sexual Infantilism
- Sexual Problems in Women
- Sexuality and Physical Changes With Aging
- Sexuality and Reproductive Issues (PDQ®): Supportive care - Health Professional Information [NCI]
- Sexuality and Reproductive Issues (PDQ®): Supportive care - Patient Information [NCI]
- SGB Syndrome
- Shaken Baby Syndrome
- Shaking
- Shaking Palsy
- Sheehan Syndrome
- Shellie's Story: Finding Time for Physical Activity
- Sherri's Story: Medicines Do Work
- Shift Work Sleep Disorder
- Shigellosis
- Shimpo syndrome
- Shin Splints
- Shingles
- Shingles
- SHML
- Shock
- Short Arm 18 Deletion Syndrome
- Short Chain Acyl CoA Dehydrogenase Deficiency (SCAD)
- Short Stature and Facial Telangiectasis
- Short Stature, Facial/Skeletal Anomalies-Retardation-Macrodontia
- Short Stature, Telangiectatic Erythema of the Face
- Short Stature-Hyperextensibility-Rieger Anomaly-Teething Delay
- Short Stature-Onychodysplasia
- SHORT Syndrome
- Shoulder Problems and Injuries
- Shoulder replacement surgery
- Shoulder Separation
- Shoulder SLAP Tear
- Shprintzen Syndrome
- Shulman Syndrome
- Shwachman Syndrome
- Shwachman-Bodian Syndrome
- Shwachman-Diamond Syndrome
- Shwachman-Diamond-Oski Syndrome
- Shy-Magee Syndrome
- SI Deficiency
- Sialadenitis
- Sialidase Deficiency
- Sialidosis
- Sialolipidosis
- Siberian Plague
- Sicca Syndrome
- Sick Building Syndrome
- Sick-Day Guidelines for People With Diabetes
- Sickle Cell Anemia
- Sickle Cell Disease
- Sickle Cell Disease
- Sickle Cell Disease, Blood Transfusions for
- Sickle Cell Disease, Bone Marrow Transplant for
- Sickle Cell Trait
- Side Effects and Interactions of Medicines, Dealing With
- SIDS
- SIDS (Sudden Infant Death Syndrome)
- Siegel-Cattan-Mamou Syndrome
- Siemens Syndrome
- Siemerling-Creutzfeldt Disease
- Silver Syndrome
- Silver-Russell Dwarfism
- Silver-Russell Syndrome
- Simian B Virus Infection
- Simmond's Disease
- Simpson Dysmorphia Syndrome
- Simpson-Golabi-Behmel Syndrome
- Singleton Merten Syndrome
- Singultus, Intractable
- Sinonasal Undifferentiated Carcinoma
- Sinus Histiocytosis with Massive Lymphadenopathy
- Sinusitis
- Sinusitis, Endoscopic Surgery for
- Sinusitis, Open Surgery for
- Sinusitis: Should I have surgery?
- Sinusitis: Should I take antibiotics?
- Sinusitus Surgery, Deciding About
- Sirenomelia Sequence
- Sirenomelus
- Siti
- Sixth Disease
- SJA Syndrome
- Sjogren Syndrome
- Sjögren's Syndrome
- SJS
- Skeletal Dysplasia, Weismann Netter Stuhl Type
- Skin Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI]
- Skin Cancer Prevention (PDQ®): Prevention - Patient Information [NCI]
- Skin Cancer Screening (PDQ®): Screening - Health Professional Information [NCI]
- Skin Cancer Screening (PDQ®): Screening - Patient Information [NCI]
- Skin Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Skin Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
- Skin Cancer, (Melanoma), Radiation Therapy for
- Skin Cancer, Melanoma
- Skin Cancer, Melanoma, Lymphadenectomy (Lymph Node Removal) for
- Skin Cancer, Nonmelanoma
- Skin Cancer, Nonmelanoma, Cryosurgery for
- Skin Cancer, Nonmelanoma, Curettage for
- Skin Cancer, Nonmelanoma, Electrosurgery for
- Skin Cancer, Nonmelanoma, Excision for
- Skin Cancer, Nonmelanoma, Mohs Micrographic Surgery for
- Skin Cancer, Nonmelanoma, Radiation Therapy for
- Skin Cancer, Nonmelanoma, Surgical Removal for
- Skin Cancer, Squamous Cell Type
- Skin cancer: Protecting your skin
- Skin care for atopic dermatitis
- Skin care for psoriasis
- Skin Changes
- Skin Peeling Syndrome
- Skin Problems, Age 11 and Younger
- Skin Problems, Age 12 and Older
- Skin Protection from the Sun
- Skull Base Chordoma
- slang: “short telomere disease”
- SLAP Lesion (Shoulder)
- Sleep and Your Body Clock
- Sleep Apnea
- Sleep Apnea (Obstructive), Adenoidectomy for
- Sleep Apnea (Obstructive), Continuous Positive Airway Pressure (CPAP) Therapy for
- Sleep Apnea (Obstructive), CPAP (Continuous Positive Airway Pressure) Therapy for
- Sleep Apnea (Obstructive), Deciding About a Sleep Study
- Sleep Apnea (Obstructive), Tonsillectomy for
- Sleep Apnea (Obstructive), Traceostomy for
- Sleep Apnea (Obstructive), Uvulopalatopharyngoplasty for
- Sleep apnea: Should I have a sleep study?
- Sleep apnea: Should I have surgery?
- Sleep Disorders (PDQ®): Supportive care - Health Professional Information [NCI]
- Sleep Disorders (PDQ®): Supportive care - Patient Information [NCI]
- Sleep Epilepsy
- Sleep Problems because of Shift Work
- Sleep Problems, Age 12 and Older
- Sleep problems: Dealing with jet lag
- Sleep study: Should I have a sleep study for sleep apnea?
- Sleeping Better
- Sleeping Pills, Deciding About Use for Insomnia
- Sleeping with Restless Legs Syndrome: Getting more sleep
- Slipped Capital Femoral Epiphysis
- Slipped Disc
- Slipped Neck Disc
- SLO syndrome
- SLOS
- Slow Heart Rate (Bradycardia or Bradyarrhythmia)
- Slow Heart Rate, Pacemaker for
- SLS
- Sly Syndrome
- SMA
- SMA 1
- SMA, Infantile Acute Form
- SMA3
- Small bowel obstruction
- Small Cell Lung Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Small Cell Lung Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
- Small Intestine Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Small Intestine Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
- Smallpox
- Smallpox
- Smart Decisions: Know Your Options
- SMCR
- Smith Lemli Opitz Syndrome
- Smith Magenis Syndrome
- Smith-Magenis chromosome region
- Smith-McCort dysplasia
- Smith-McCort syndrome
- Smoking and Heart Attack Risk Calculator
- Smoking and Life Span Calculator
- Smoking Cessation
- Smoking Cessation and Continued Risk in Cancer Patients (PDQ®): Supportive care - Health Professional Information [NCI]
- Smoking Cessation and Continued Risk in Cancer Patients (PDQ®): Supportive care - Patient Information [NCI]
- Smoking Cessation Readiness Calculator
- Smoking Cessation, Deciding About Medication
- Smoking cessation: Coping with cravings and withdrawal
- Smoking cessation: Dealing with weight gain
- Smoking cessation: Getting support
- Smoking cessation: Helping someone quit
- Smoking cessation: Preventing slips or relapses
- Smoking Cessation: What to do when You Crave Nicotine
- Smoking Cost Calculator
- SMS
- SMS
- Snake and Lizard Bites
- SNE
- Sneddon Syndrome
- Sneddon's Syndrome
- Snoring
- Snoring, Adenoidectomy for
- Snoring, Radiofrequency Palatoplasty for
- Snoring, Tonsillectomy for
- Snoring, Uvulopalatopharyngoplasty for
- Social Anxiety Disorder
- SOD
- Solar Keratosis
- Soldier's Heart
- Somogyi Effect and Dawn Phenonemon
- Sore Throat
- Sore throat: Should I take antibiotics?
- Soroche
- Sotos Syndrome
- South African Genetic Porphyria
- South American Blastomycosis
- sparse hair
- Spasmodic Dysphonia
- Spasmodic Torticollis
- Spasmodic Wryneck
- Spastic Colon
- Spastic Colon
- Spastic Dysphonia
- Spastic Spinal Familial Paralysis
- Spastic Spinal Monoplegia Syndrome
- Specialists, Medical Care
- Specific Reading Disability
- Speech and Language Development
- Spermatocele (Epididymal Cyst)
- SPH2
- Spherocytic Anemia
- Spherocytosis
- spherophakia-brachymorphia syndrome
- Sphingolipidosis 1
- Sphingolipidosis, Krabbe's Type
- Sphingolipidosis, Tay-Sachs
- sphingomyelinase deficiency
- Spica cast, Caring for your child in a
- Spider Bite, Black Widow
- Spider Bite, Brown Recluse
- Spider Bites
- Spider Veins
- Spielmeyer-Sjogren Disease
- Spina Bifida
- Spina Bifida
- Spinal and Bulbar Muscular Atrophy
- Spinal Arachnoiditis
- Spinal Ataxia, Hereditofamilial
- Spinal Chordoma
- Spinal Cord Cyst
- Spinal Cord Injury
- Spinal cord stimulation for chronic pain
- Spinal Diffuse Idiopathic Skeletal Hyperostosis
- Spinal DISH
- Spinal fusion (arthrodesis)
- Spinal fusion for scoliosis
- Spinal Fusion, Cervical
- Spinal Muscular Atrophy
- Spinal Muscular Atrophy Type 1
- Spinal muscular atrophy type 3
- Spinal Stenosis, Cervical
- Spinal Stenosis, Deciding About Surgery
- Spinal Stenosis, Decompressive Laminectomy for
- Spinal Stenosis, Laminectomy, Decompressive for
- Spinal Stenosis, Lumbar
- Spinal stenosis: Should I have surgery?
- Spinocerebellar Ataxia
- Spinocerebellar Ataxia Type III (SCA 3)
- Spinocerebellar Ataxia with Axonal Neuropathy
- Spiritual Healing
- Spirituality in Cancer Care (PDQ®): Supportive care - Health Professional Information [NCI]
- Spirituality in Cancer Care (PDQ®): Supportive care - Patient Information [NCI]
- Spirochetal Jaundice
- Spirochetosis
- Spitting Up
- Splenic Agenesis Syndrome
- Splenic Ptosis
- Splenomegalic Polycythemia
- Splenomegaly with Rheumatoid Arthritis
- Splenoptosis
- Splint Care Tips
- Splinter Removal
- Split Hand Deformity-Mandibulofacial Dysostosis
- Split Hand Malformation
- Split Hand/Split Foot Malformation
- Split-Hand/Foot Deformity
- Split-Hand/Foot Malformation
- Spondyloarthritis
- Spondyloarthropathies
- Spondyloarthropathy
- spondylocostal dysostosis
- spondylocostal dysplasia
- Spondyloepiphyseal Dysplasia Tarda
- Spondyloepiphyseal Dysplasia, Congenital
- Spondylolisthesis
- spondylothoracic dysostosis
- spondylothoracic dysplasia
- Spondylotic Caudal Radiculopathy
- Sponge Kidney
- Spongioblastoma Multiforme
- Spongioblastoma Multiforme,Glioblastoma
- Spongy Degeneration of the Central Nervous System
- Spontaneous Hypoglycemia
- Sporadic Lymphangioleiomyomatosis
- Sporadic Short Stature
- Sprained Ankle
- Sprained ankle: Rehabilitation exercises
- Sprained ankle: Using a compression wrap
- Sprengel Deformity
- Spring Ophthalmia
- Sprue
- Squamous Cell Carcinoma
- SRS
- SRY-Box 9, SOX9 Mutations Syndrome
- SSADH Deficiency
- SSPE
- SSRI medicine: Should I use an SSRI medicine for PMS symptoms?
- St. John's Wort
- St. Vitus Dance
- Stable Angina, Deciding About Angioplasty
- Stage I Nonseminoma Testicular Cancer, Deciding About Treatment
- Stage I Seminoma Testicular Cancer, Deciding About Treatment
- Stale Fish Syndrome
- Stan's Story: Getting There Hasn't Been Easy
- Staph Food Poisoning
- Staphyloccal Scalded Skin Syndrome
- Startle Disease
- Stasis Leg Ulcer
- Statins for High Cholesterol, Deciding About
- Stay Active, Having enough Energy to: Quick Tips
- Steele-Richardson-Olszewski Syndrome
- Steely Hair Disease
- Stein-Leventhal Syndrome
- Steinert disease
- Stem Cell Transplant, Allogeneic
- Stem Cell Transplant, Autologous
- Stenosing Cholangitis
- Stenosis of the Lumbar Vertebral Canal
- Stenosis, Mitral Valve
- Stenosis, Spinal
- Stents for Heart Attack and Unstable Angina
- Step counter, Using a
- Sterilization, Female
- Steroid Abuse, Anabolic
- Steroid Sulfatase Deficiency
- Steroid Sulfatase Deficiency Disease; SSDD
- Steve's Story: Coping With Arthritis
- Stevens Johnson Syndrome
- Stickler Syndrome
- Stickler Syndrome Type III
- Stiff Man Syndrome
- Stiff Person Syndrome
- Still's Disease
- Stillbirth
- Stilling-Turk-Duane Syndrome
- Stings, Insect
- Stomach (Gastric) Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI]
- Stomach (Gastric) Cancer Prevention (PDQ®): Prevention - Patient Information [NCI]
- Stomach (Gastric) Cancer Screening (PDQ®): Screening - Health Professional Information [NCI]
- Stomach (Gastric) Cancer Screening (PDQ®): Screening - Patient Information [NCI]
- Stomach Lymphoma, Non-Hodgkins Type
- Stomach Pain, Age 11 and Younger
- Stomach Pain, Age 12 and Older
- Stomach Stapling for Obesity
- Stomach Ulcer
- Stomatodynia
- Stomatopyrosis
- Stopping a Nosebleed
- Stopping Bleeding from a Minor Head Wound
- Stopping unwanted thoughts: Positive thinking
- Strabismus
- Strabismus fixus
- Streeter Anomaly
- Streeter Bands
- Streeter Dysplasia
- Strep Throat
- Streptococcal Gangrene
- streptococcal gangrene
- Streptococcus Agalactiae
- Streptococcus, Group B
- Stress Headaches
- Stress Incontinence Treatment, Deciding About
- Stress incontinence: Should I have surgery?
- Stress Level Calculator
- Stress Management
- Stress Management on the Job
- Stress management: Breathing exercises for relaxation
- Stress management: Doing guided imagery to relax
- Stress management: Doing meditation
- Stress management: Doing progressive muscle relaxation
- Stress management: Managing your time
- Stress management: Practicing yoga to relax
- Stress management: Reducing stress by being assertive
- Stress management: Relaxing your mind and body
- Stress Reduction for Caregivers: Quick Tips
- Stress Reduction for the Holidays: Quick Tips
- Stress Relief and Relaxation
- Stress Resiliancy Calculator
- Stress Urinary Incontinence in Women
- Stress Urinary Incontinence in Women, Tension-Free Vaginal Tape for
- Stress Urinary Incontinence in Women, Urethral Sling for
- Striatonigral Degeneration, Autosomal Dominant Type
- striopallidodentate calcinosis
- Stroke
- Stroke Prevention with Anticoagulants, Deciding About
- Stroke Prevention, Taking Daily Aspirin
- Stroke recovery: Coping with eating problems
- Stroke Rehabilitation
- Stroke Risk Calculator
- Stroke, Carotid Endarterectomy for
- Stroke, Deciding About Carotid Endarterectomy for
- Stroke: Should I have carotid endarterectomy?
- Stroke: Should I move my loved one into long-term care?
- Stroke: Should I take daily aspirin to prevent a heart attack or stroke?
- Struma lymphomatosa
- Strumpell Disease
- Strumpell's Familial Paraplegia
- Strumpell-Lorrain Familial Spasmodic Paraplegia
- Strumpell-Lorraine Syndrome
- Sturge Weber Syndrome
- Sturge-Kalischer-Weber Syndrome
- Sturge-Weber Phakomatosis
- Stuttering
- Stuve-Wiedemann Syndrome
- Styes and Chalazia
- Subacromial smoothing and acromioplasty for rotator cuff disorders
- Subacute Asthenia
- Subacute Cerebellar Degeneration
- Subacute Necrotizing Encephalopathy
- Subacute Sclerosing Panencephalitis
- Subacute Spongiform Encephalopathy
- Subcortical Arteriosclerotic Encephalopathy, SAE
- Subcortical Dementia
- Subcortical Ischemic Vascular Disease
- Subendocardial Sclerosis
- Subjective Tinnitus
- Substance Abuse Issues In Cancer (PDQ®): Supportive care - Health Professional Information [NCI]
- Substance Abuse Issues In Cancer (PDQ®): Supportive care - Patient Information [NCI]
- Substance Abuse, Teen
- Substance abuse: Dealing with teen substance use
- Succinic Semialdehyde Dehydrogenase Deficiency
- Succinylcholine Sensitivity
- Succinylpurinemic Autism
- Sucrase-Isomaltase Deficiency, Congenital
- Sucrose Intolerance, Congenital
- Sudanophilic Leukodystrophy
- Sudanophilic Leukodystrophy, Pelizaeus-Merzbacher Type
- Sudden Infant Death Syndrome
- Sudden Infant Death Syndrome (SIDS)
- Sudeck's Atrophy
- Sugio-Kajii Syndrome
- Suicidal Thoughts or Threats
- Sulfatide Lipidosis
- Sulfatidosis
- Summer Encephalitis
- Summitt Syndrome
- Summitt's Acrocephalosyndactyly
- Sunburn
- Superior Oblique Tendon Sheath Syndrome
- Support Groups and Social Support
- Suppurative Arthritis
- suppurative fasciitis
- Supraventricular Tachycardia
- Supraventricular Tachycardia, Catheter Ablation for
- Surdocardiac Syndrome
- Surgery for an Achilles tendon rupture
- Surgery for chronic pelvic pain
- Surgery for ovarian cysts
- Surgery for tennis elbow
- Surgery: What to Expect
- Surgical excision of melanoma
- Surgical nail removal for fungal nail infections
- Surgical removal of genital warts by excision
- Susac syndrome
- Susac's Syndrome
- Susan's Story: A Friend Really Helps
- Sutton Disease II
- Suxamethonium Sensitivity
- Swallowed Objects
- Swamp Fever
- Sweat Retention Disease
- Sweating Gustatory Syndrome
- Sweet Syndrome
- Swelling
- Swimmer's Ear
- Swimmer's Ear (Otitis Externa)
- Swineherd Disease
- Swiss Cheese Cartilage Syndrome
- Swollen Glands and Other Lumps Under the Skin
- Swollen Lymph Nodes
- SWS
- Swyer syndrome
- Symmetric Asphyxia
- Symptomatic Parkinsonism
- symptomatic porphyria
- Syncope (Fainting)
- Syndactylic Oxycephaly
- Syndactyly Type I with Microcephaly and Mental Retardation
- Syndromatic Hepatic Ductular Hypoplasia
- Synergistic Necrotizing Fasciitis of the Perineum and Genitalia
- Synovectomy for rheumatoid arthritis
- Syphilis
- Syphilis, Acquired
- Syphilis, Congenital
- Syphilitic Proctitis
- Syringobulbia
- Syringohydromyelia
- Syringomyelia
- Systematic Lupus Erythematosus
- Systemic Capillary Leak Syndrome
- systemic elastorrhexis (obsolete)
- Systemic Mast Cell Disease
- Systemic Mastocytosis
- Systemic Sclerosis
- Systolic Click-Murmur Syndrome
- Systopic Spleen
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