no, if anything, i would say that my thickness had actually increased somewhat especially on the crown where there was some visitable thinning and miniaturization, even after the first 18months of major regrowth, now its no different from the rest of my hair
about 6 months ago though, i did go through a stage with some increased shedding, but probably not hairloss, still under 100 a day though, but it stopped, lasted maybe 4 weeks
i had a high fever a few months before, and also switched from propecia 1mg to proscar 1.25mg... i attributed it to a fever, change in dosage, or the fact that i cut all my proscar up at once, and maybe the ones i was taking at the end were less effective from being exposed to air for almost 3 months...