I Have Developed Severe Dryness Behind Ears That Are Really

I have developed severe dryness behind ears that are really flaky, I'm a picker I should say! I haven't been showering as much as usual not that I'm dirty, just been working 7 days A week I'm healthcare worker, I only have 3 clients and I do private home care not facility and they have no symptoms as far as I know . It feel tight and glassy and now I'm getting on eyelids spreading ??psoriasis or shingles or scabies ???