Hello and welcome to HCM,
Your history suggests that you are suffering from a severe
allergic reaction against allergen in ivy.
it seems there is recurrent exposure to the allergen.
In-order to control the acute symptoms, you need to take anti-histaminic.
For long time relief, you need to stay away from the ivy.
If you have ivy vine near your home, get it removed.
You may even be prone to allergic reaction against other allergens like pollen, dust, mite, etc.
You need to be vigilant regarding this.
Right now, you need to consult your physician (preferably immunologist) for clinical examination, relevant investigations and prescription of anti-histaminic.
thanks and take care
Dr Shailja P Wahal