gary_sanders -- I think the key to answering this question is in the timing. I'm not sure how much time had passed between those two photos but it certainly looks like there has been some progression of loss. If your loss had stabilized on the finasteride and been stable for a long period of time and then you switched to the dutasteride and within a couple of months noticed significant shedding, then likely it is a shedding phenomenon. In theory, if shedding can happen when someone first starts finasteride, due to the drop in DHT levels, then it can also happen if someone switches from finasteride to dutasteride -- bc you are dropping DHT levels even further with the dutasteride. So if this sounds like your timeline, its probably dutasteride related shedding and the hair should come back. If it was only a couple of months between those two photos, I doubt its progression of hair loss. That would be fairly considerable progression in a very short time for someone taking finasteride or dutasteride. With that being said, there is still some progression of hair loss despite prevention in many cases, but I would expect it to be much slower. So if you told me that those two photos were taken a year apart despite being on the finasteride, then I would say there has been progression of loss. In those cases, doing other things to maximize the preventative regimen, such as adding minoxidil (topical or oral), adding a laser cap and periodic PRP procedures, would be recommended. So to summarize I think it all has to do with the timing: if it was fairly rapid then likely shedding from the medication switch, but if it was over a longer period of time its probably progressive hair loss. Hope this helps.