That's allergies. Even though these are signs of inhalant allergies, check for food allergies too. When I quit drinking milk, my hay fever symptoms almost disappeared.
Also, in the US it's ragweed season ....
Good info in above post, too!
Keep us posted,
Hello and hope you are doing well.
The itchiness could be due to contact dermatitis, that is exposure to an irritant like a chemical or metal or anything you are allergic to, it can cause itchiness and rash. The aim of the therapy is identification and removal of trigger factor. It is the most important and the only effective long-term therapy. Local measures like ice packs and antipruritic lotions are helpful. Antihistamines block the histamine receptors and prevent histamine from acting and thus help in preventing attacks.
But to exactly pin point the pathology you will need to consult your primary care physician who will examine you an may ask for blood tests. If the need arises he may refer you to a dermatologist.
Hope this helped and do keep us posted.