Can't not to agree with you, even if this topic is old! Such thing happens really often in case of medications, I had the same problem as also some my friends... Fortunately hair can be restored in this case, usually after finishing taking the certain medications, the other situation will be if the hair loss is connected with genes
Usually such tips as here http://machohairstyles.com/best-tips...-bad-hairline/ for example are helpful, also using some natural oils like coconut and argan one
Rogaine, propecia and even green tea juice can be very effective too, I know one guy who had a very bad hair loss and he restored his hair so greatly with using it