I didn't suggest meds.. I said get a water conditioner.. are you still not using a conditioner for his water? This is lethal.
In the meantime do epsom salts as a detox and get that conditioner. You should be able to find something locally.. and switch later to something online if you dont' like what you can get locally.
His fin rot isn't bad and should clear up with clean water and time. If it keeps getting worse you may have to treat.. also with that balding I've recently seen that clear up with epsom salts.. very safe to use so long as you follow directions. They need to be pure 100% magnesium sulfate with no other additives, fragrances or dyes of any kind per the ingredients label. You need to predissolve 1 tsp per gallon in a little cup with some of his tank water. Then pour it very slowly over the course of an hour into his tank. Slow is important because it can cause a drop in ph. The epsom salts will not need to be redosed until you do your next water change because they will not evaporate or leave the tank by any means unless you actually take them out by replacing the water. Couple weeks on the epsoms might help his head clear up and also with the mild rot.
At this point I think he needs meds along with the epsoms.. especially if he's got face rot.. Look for Kanaplex by seachem, Maracyn Plus by Mardel or Furan 2 by API.