👉 Pinic is a medical term that refers to a sudden and severe allergic reaction. It occurs when the immune system mistakenly attacks the lining of your nose, causing inflammation and swelling. This can lead to difficulty breathing, sneezing, and a sense of tightness or pressure in the nose. While pinics are usually mild and not life-threatening, they can be dangerous if left untreated. If you experience a pinic, it's important to seek medical attention as soon as possible.