There are 3 main diseases that may cause itchy nostrils in children, namely chronic rhinitis, allergic rhinitis, and nasal vestibular eczema.
Commonly affected factors.
Allergens such as dust mites, pollen, fungi, animal dander, feathers, and insects.
Viral infections such as rhinovirus, influenza virus, parainfluenza virus, adenovirus, respiratory syncytial virus.
Other factors such as dry air and foreign bodies in the nose.