Hi, I had the same problem with eyelash loss (I lost all of the top lashes on both eyes) last year. Like your situation, they would grow back (very thin and no pigment)and then fall out again. Do you have allergies? I noticed that when I started taking medicine for my allergies my lashes grew back..and stopped falling out! The pigment is even begining to return. Sinus infections (I assume that is what you have) are often a result of allergies, so maybe you have them. Hopefully this works for you. Write me back if it does--it take a couple of months to notice--good luck. By the way, my medicine is Allegra-D