mr B has suffered with this on and off for years. Went to the GP with him and the female doc had it too!!! and really bad.
She had her shoes off, and she said she was painting them with nail varnish to try and hide them....(they were disappearing).
Now then, we were there to get Terbinafine and the doc said she wouldn't take them because of the side effects :-/ but.... mr B, although they do have strong side effects, took them and it has as good as gone. BUT.... when it was at it's worst it spread to his body and that took a dandruff shampoo to get rid of it called SELSUN... and boy does that stink!!! hehe....
The drug made him feel sick and a little unwell and his blood test came back a bit scewey as it can affect the liver too. I think that is a rarish side effect though.
I now keep him away from yeast products..... so no mushrooms, no bread and no beer lol..... don't feed it!!!
Keep it under control now because it spreads ok....
Best Wishes to You :-)
B. x