Kingdom (biology) In biology, kingdom (Latin: regnum, plural regna) is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called phyla.
Pinworms symptoms in children. 1. An itching around the anus, which may become worse at night on getting the female worm depositing her eggs. It causes problem during sleep of infected child. An intense itching causes inflammation on the skin.
Risk factors for pinworm infection include: Being young. Pinworm infections are most likely to occur in children younger than 18. The microscopic eggs are easily spread to family members, caregivers, or other children at school or child care centers.