I'm sorry to hear about the swelling and irritation you're experiencing from the insect bite on your nose. This can be uncomfortable and sometimes concerning.

For relief, antihistamines and anti-inflammatory medications are often used to reduce swelling and irritation caused by allergic reactions to insect bites. One such medication combines Desloratadine, an antihistamine that blocks chemicals causing allergic symptoms, and Montelukast, which helps reduce inflammation and swelling in the nose. However, this medication requires a prescription and should only be taken under a doctor's guidance.

In the meantime, you can try these general measures:

• Apply a cold compress gently to the swollen area to reduce swelling.
• Avoid scratching or rubbing the bite to prevent further irritation or infection.
• Keep the area clean and dry.

If you notice worsening symptoms such as increased swelling, severe pain, difficulty breathing, or signs of infection (pus, spreading redness), please seek immediate medical attention.

I recommend consulting a dermatologist or an allergist who can evaluate your condition properly and prescribe the appropriate treatment. If symptoms worsen or you experience any difficulty breathing, contact emergency services promptly.To narrow down potential causes, we will need some more information.Please tell me your age and gender. I understand you're dealing with swelling and irritation in your nose from an insect bite.