- Anaphylaxis
- Anatomical Age
- Anemias
- Angelman's Syndrome
- Animal Bite Infections
- Anorexia Nervosa
- Antenatal Testing
- Antepartum Testing
- Antiacne Drugs
- Antiasthmatic Drugs
- Antibiotics
- Antibiotics, Topical
- Antidepressants
- Antiepileptics
- Antihistamines
- Antisocial Behavior
- Antisocial Personality Disorder
- Antiviral Drugs
- Anxiety
- Apgar Testing
- Apnea of Infancy
- Appendicitis
- Arteriovenous Fistula
- Asphyxia Neonatorum
- Assessment
- Asthma
- Ataxia Telangiectasia/Chromosome Breakage Disorders
- Atopic Dermatitis
- Atrial Septal Defect
- Attachment Between Infant and Caregiver
