My British friend told me he got sick and has a "skin condition" on his face?

yesterday he was really depressed about it because he had a big audition scheduled today and he had never had skin problems before. he told me in addition to this skin condition on his chin, he had no appetite and his gums and throat were very swollen. I told him to go the doctor because it sounds like a food allergy. he went ths morning and later said he was doing better and got a cream he had to apply topically twice a day. I asked him what it was and he said it's what he thought it was but he doesn't want to talk about it. I am very curious now.
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