Of course, first step would be to give deworming: Syrup Albendazole (Bandy or Zentel) 400mg/10ml, give 5ml at bedtime & repeat again 5ml at bedtime after 2 week gap
If perianal itching is due to pinworms, it sure will resolve
Next Steps
Trial of oral Albendazole
Health Tips
If heavy worm infestation, Albendazole can precipitate abdominal pain or rash occasionally.