It is very much possible that the itching and irritation is caused by allergy to Nuvaring. It is a very commonly reported side effect of using Nuvaring. Other less common side effects experienced by male partners are- Penile dryness and scaling Bleeding and scarring of penis Dermatitis of penis and scrotum Try avoiding sexual intercourse for a few days. If the itching and irritation improves then it is a sure sign of allergy. Talk to your doctor about the possible ways to deal with the allergy. Hope this answers your question, thank you.