- Somnambulism
- Sore Throat
- Spasticity
- Special Education
- Specific Language Impairment
- Speech Disorders
- Spina Bifida
- Spinal Cord Injury
- Spinal Muscular Atrophy
- Sports
- Sports Injuries
- Sprains and Strains
- Stanford-Binet Intelligence Scales
- Staphylococcal Infections
- Stealing
- Stepfamilies
- Stimulant Drugs
- Stomatitis
- Strabismus
- Stranger Anxiety
- Strep Throat
- Streptococcal Infections
- Stridor
- Stroke
- Sturge-Weber Syndrome
- Stuttering
- Styes and Chalazia
- Subdural Hematoma
- Substance Abuse and Dependence
- Sudden Infant Death Syndrome
