The child with pallor.
D000747:Anemia, Hypochromic / Q000150:complications; D001342:Autonomic Nervous System Diseases / Q000150:complications; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D010167:Pallor / Q000209:etiology*; D010272:Parasitic Diseases / Q000150:complications; D012880:Skin Pigmentation; D013789:Thalassemia / Q000150:complications