Thank you for writing to us.
House dust mite allergy
is a likely possibility given the itchy eyes, runny nose and sneezing. Urticaria can happen (itchy hives) sometimes due to the dust allergy
but usually unrelated.
You will need skin prick tests or specific IgE blood test
to find out what your allergies are (aeroallergen panel). Long acting antihistamines like cetirizine 10mg or fexofenadine
180mg plus flixonase nasal spray
2 spras/nostril twice daily is recommended for severe house dust mite allergy. You will need to take both for at least 2 months to have a good effect.
The antihistamines will also work for the urticaria.
I hope that was useful.