I had a similar problem when riding in the drop position for any length of time and found out it was partially contributable to the shorts I was wearing. I got a new seat (which helped some, but still had the problem, not as bad though) and adjusted the reach. Some shorts are so padded that they bunch up in the front area and can be quite painful and irritating while riding. I now use shorts with less padding and also like Vaseline best of all of the alternatives. It is clear and does not bleed the white color through like Desitin. It also seems to be the best option, for me, of keeping away the dreaded 'yeast infection' after days of riding.