My female Claude has developed a small red spot on her bottom 'lip'.

I noticed this a few days ago when it was a really small nearly unnoticable mark but now it has definitely gotten worse and now resembles a red spot which looks painful.

She has been pawing away at it with her hands all day and now I really need to do something before it gets any worse.

I have still had no luck getting a hold of any Lymnozyme but I am just heading to my pet store to pick up some Melafix and myxazin.

Will these water supplements be enough to stop this getting any worse?

I done a 100% water and substrate change as I was scared it was my water conditions which are worsening this.,..

Any help is VERY much appreciated, thanks, Gav