Need advice for sick Betta!

[Nima007]

I posted this on a normal thread but I was recommended to post it as an emergency post. My male Betta has developed a white growth right between his eyes. If I could describe it, the most accurate description would be that it looks like a small snowball. Initially I thought it was Ich, as it started as a small discoloration of the skin but now it is a large tumor-like growth. Any suggestions would be greatly appreciated! He loves to be social and I would like to get him back to his healthy self again. Thank you!