You could have contracted scabies, it appears ususally on feet and hands I would contact a dermatologist...you could have contacted a parasite or have a food allergy....if you are using anything new on your skin even laundry
Just got diagnosed with Lupus last week. Is there any way to make yourself go into remission? Sounds like a malar butterfly rash. Even if in remission you should always protect your self from the sun...
Are the "bumpy patches" a result of your anxiety and stress? Perhaps. But they may also be due to any number of things.
If you are concerned your doctor should be able to provide a diagnosis, or refer you to a specialist