I have never heard of this, but it certainly sounds like a connection. How about having her pinch that side before and during let-downs to see if that prevents it. Also, is she having nasal congestion, allergy symptoms, or dryness? Treating these appropriately could help. --for dryness, she could lubricate the tissues with a little Vaseline on a Q-tip a few times a day If all else fails an ENT Dr. could cauterize that side Kim Connor PA-C, CLE