Curious about a health topic? From Achilles tendon to Wilson's disease and everything in between, we provide information on a variety of topics that concern us all.

• Sacral dimple
• Sacroiliitis
• Salivary gland cancer
• Salmonella infection
• Sarcoidosis
• Scabies
• Scarlet fever
• Schizoaffective disorder
• Schizoid personality disorder
• Schizophrenia
• Schizotypal personality disorder
• Sciatica
• Scleroderma
• Scoliosis
• Scorpion stings
• Scrotal masses
• Seasonal affective disorder (SAD)
• Seborrheic dermatitis
• Seborrheic keratosis
• Secondary hypertension
• Self-injury/cutting
• Separated shoulder
• Separation anxiety
• Sepsis
• Septic arthritis
• Serotonin syndrome
• Severe acute respiratory syndrome (SARS)
• Sex headaches
• Sexually transmitted diseases (STDs)
• Shaken baby syndrome
• Sheehan's syndrome
• Shellfish allergy
• Shigella infection
• Shin splints
• Shingles
• Sick sinus syndrome
• Sickle cell anemia
• Sinus headaches
• Sjogren's syndrome
• Skin cancer
• Sleep apnea
• Sleep terrors (night terrors)
• Sleepwalking
• Small vessel disease
• Smallpox
• Snoring
• Social anxiety disorder (social phobia)
• Soft tissue sarcoma
• Solitary rectal ulcer syndrome
• Sore throat
• Soy allergy
• Spermatocele
• Spider bites
• Spina bifida
• Spinal cord injury
• Spinal headaches
• Spinal stenosis
• Spinal tumor
• Sprained ankle
• Sprains and strains
• Squamous cell carcinoma
• Staph infections
• Stevens-Johnson syndrome
• Stickler syndrome
• Stomach cancer
• Stomach polyps
• Strep throat
• Stress fractures
• Stress incontinence
• Stretch marks
• Stroke
• Stuttering
• Sty
• Subconjunctival hemorrhage (broken blood vessel in eye)
• Sudden cardiac arrest
• Sudden infant death syndrome (SIDS)
• Suicide and suicidal thoughts
• Sun allergy
• Sunburn
• Sweating and body odor
• Sweet's syndrome
• Swimmer's ear
• Swimmer's itch
• Swine flu (H1N1 flu)
• Swollen lymph nodes
• Syphilis
• Syringomyelia