- Clubfoot
- Coagulation Disorders
- Coarctation of the Aorta
- Cochlear Implants
- Cognitive Development
- Cold Sore
- Colic
- Color Blindness
- Common Cold
- Common Variable Immunodeficiency
- Communication Skills
- Computed Tomography
- Concussion
- Condom
- Conduct Disorder
- Congenital Adrenal Hyperplasia
- Congenital Amputation
- Congenital Bladder Anomalies
- Congenital Brain Defects
- Congenital Heart Disease
- Congenital Hip Dysplasia
- Congenital Ureter Anomalies
- Conjunctivitis
- Constipation
- Contact Dermatitis
- Contraception
- Corneal Abrasion
- Cough
- Cough Suppressants
- Craniosynostosis
