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SAD (Seasonal Affective Disorder)

SARS (Severe Acute Respiratory Syndrome · Atypical Pneumonia)

Scabies (Mite Infestation · Body Lice)

Schizophrenia (Psychosis · Psychotic Disorders)

Sciatica

Scleroderma (Systemic Sclerosis · Morphea)

Scoliosis (Spine Curvature · Spinal Curvature)

Seasickness (Motion Sickness · Travel Sickness)

Seasonal Affective Disorder (SAD)

Secondary Polycythemia (Polycythemia · Polycythemia Vera · Primary Polycythemia)

Senile Dementia (Alzheimer's Disease)

Senile Dementia (Dementia · Chronic Brain Syndrome · Organic Brain Syndrome)

Seventh Nerve Palsy (Bell's Palsy · Facial Paralysis · 7th Nerve Palsy)

Severe Acute Respiratory Syndrome (SARS · Atypical Pneumonia)

Sexual Dissatisfaction in Women (Female Sexual Dysfunction · Low Libido in Women · Decreased Sex Drive - Female · Lack of Sexual Desire in Women)

Sexually Transmitted Disease (Sexually Transmitted Infection · STI · STD)

Sexually Transmitted Infection (STI · Sexually Transmitted Disease · STD)

Shaking Palsy (Parkinson's Disease)

Shingles (Herpes Zoster · Varicella-Zoster)

Sickle Cell Anemia (Hemoglobin S Disease · Sickle Cell Disease)

Sickle Cell Disease (Sickle Cell Anemia · Hemoglobin S Disease)

Sinus Headache (Headaches · Tension Headache · Migraine · Cluster Headache)

Sinus Infection (Sinusitis)

Sinusitis (Sinus Infection)

Siriasis (Heat Stroke · Sunstroke · Heat Exhaustion · Thermic Fever)

Sjögren's Syndrome

Skin Burns (Burns)

Skin Cancer (Basal Cell Cancer · Squamous Cell Cancer · Superficial Basal Cell Carcinoma · Non-Melanoma Skin Cancer)

Skin Cancer (Melanoma · Cancer of the Skin · Skin Tumour)

Skin Discoloration (Vitiligo · Depigmentation · Loss of Skin Pigmentation · Skin Discolouring)

Skin Discolouring (Vitiligo · Depigmentation · Loss of Skin Pigmentation · Skin Discoloration)

Skin Tumour (Melanoma · Skin Cancer · Cancer of the Skin)

Slapped-cheek Disease (Fifth Disease · Human Parvovirus B19 · Erythema Infectiosum)

SLE (Lupus · Systemic Lupus Erythematosus)

Sleep Apnea

Sleep Disorder (Insomnia · Trouble Sleeping · Sleep Problems)

Sleep Problems (Insomnia · Sleep Disorder · Trouble Sleeping)

Slipped Disc (Herniated Disc · Prolapsed Disc · Ruptured Disc)

Smallpox (Variola)

Smoking Cessation (Stopping Smoking · Quitting Smoking)

Solar Erythema (Sunburn · Excess Sun)

Solar Keratosis (Actinic Keratosis · Precancerous Skin Lesion)

Sore Throat (Tonsillitis · Tonsilitis)

Spastic Bowel (Irritable Bowel Syndrome · IBS · Functional Bowel Disorder · Spastic Colon)

Spastic Colon (Irritable Bowel Syndrome · IBS · Functional Bowel Disorder · Spastic Bowel)

Spider Bites

Spiderweb Veins (Varicose Veins · Leg Veins · Bulging Veins)

Spina Bifida (Spinal Cord Conditions · Birth Defects)

Spinal Cord Conditions (Spina Bifida · Birth Defects)

Spinal Curvature (Scoliosis · Spine Curvature)

Spine Curvature (Scoliosis · Spinal Curvature)

Spinning (Vertigo · Dizziness)

Sports Injuries (Athletic Injuries)

Squamous Cell Cancer (Skin Cancer · Basal Cell Cancer · Superficial Basal Cell Carcinoma · Non-Melanoma Skin Cancer)

STD (Sexually Transmitted Infection · STI · Sexually Transmitted Disease)

Stein-Leventhal syndrome (Polycystic Ovary Syndrome · PCOS · Chronic Hyperandrogenic Anovulation (CHA))

STI (Sexually Transmitted Infection · Sexually Transmitted Disease · STD)

Stomach Cancer (Gastric Cancer)

Stomach Flu (Gastroenteritis · Norwalk Virus · Norovirus)

Stomach Ulcers (Peptic Ulcer Disease · Ulcers · Gastric Ulcers · Duodenal Ulcers)

Stopping Smoking (Smoking Cessation · Quitting Smoking)

Strep (Strep Throat · Throat Infection · Streptococcal Pharyngitis)

Strep Throat (Throat Infection · Strep · Streptococcal Pharyngitis)

Streptococcal Pharyngitis (Strep Throat · Throat Infection · Strep)

Stroke (Cerebrovascular Accident · Ischemic Stroke · Hemorrhagic Stroke)

Styes (Hordeolum)

Substance Use Problems (Drug Abuse · Addiction)

Sudden Infant Death Syndrome

Suicide

Sunburn (Excess Sun · Solar Erythema)

Sunstroke (Heat Stroke · Heat Exhaustion · Thermic Fever · Siriasis)

Superficial Basal Cell Carcinoma (Skin Cancer · Basal Cell Cancer · Squamous Cell Cancer · Non-Melanoma Skin Cancer)

Swimmer's Ear

Swine Flu (H1N1 Influenza · H1N1 Flu Virus · Influenza A (H1N1) · Human Swine Flu)

Syndrome X (Metabolic Syndrome · Insulin Resistance Syndrome)

Syphilis (Venereal disease · VD)

Systemic Lupus Erythematosus (Lupus · SLE)

Systemic Sclerosis (Scleroderma · Morphea)