Really quick question but I've forgotten.... How do I cure my HA again, it's got one of those disease thingies from halloween lol

Actually, you have the disease from the Pandemic, not from halloween/Morostide :) To remove it, you need to use a . You can buy it from shops or make it here with 50 candy hearts + a potion that were made during the event.

Thank-you ^_^ - it's much better now