Mix one part white vinegar with three parts distilled water in a one-pint jar. A drop or two of this solution in the ear canal nightly will help prevent otitis externa, or swimmer’s ear, by stabilizing the ear’s pH. — Lisa Mahler, ARNP, Wheeler, Tex. (176-6)

These are letters from practitioners around the country who want to share their clinical problems and successes, observations and pearls with their colleagues. We invite you to participate. If you have a clinical pearl, submit it here.