Since about the age of 20 so about 8 years I have had red dry rash on the sides of my nose , if I'm stressed or have no sleep it's get really bad and sore I have tried dexamethasone a few times 1mg for 3-4 days after 2 days of dexamethasone the rash is gone i woke up the other day after taking dexamethasone for two days with the smoothest I have ever felt on that part of my face where the rash normally is and there was no dryness or redness. Why is this? Is it an autoimmune issue?