I have had this problem since age 10, it recurrs and recurrs and drives me mad. Some days I cant even leave the house. I have been in tears over this many times. 

Today I decided enough was enough and all the blistex, canesten, apple cider and hydrocortisone in the world wasn't enough and sought advice from a dr friend. 

Her advice was EUMOVATE cream. Apparently it can be bought over counter however you should say it's for your arm or elbow as they will make you go to a Dr appointment first if you say for lips which we all know can take ages and then they don't prescribe it and tell you to drink more water. 

I am going to get it today and will keep everyone updated but my Dr friend said "apply and wait for the magic" so hopefully this could be the cure!