EXTREMELY DRY SKIN & ITCHING. Suddenly?.

Hello, I have always had oily skin...but since two years(i.e after covid started and I was at home) have started to notice my skin is always dry...even on moisturizing, it turns dry quickly. I have an oily or maybe a combination skin type..but never had dry skin..but my face also started to dry out , still does. I stopped using facewash but dryness persisted. I recently started to face itching also which lead to redness . I feel like I need to exfoliate my skin/body frequently now with a body scrubber else the skin feels thick or rough and itchy. It feels like dead cells are shedding off but why so much suddenly ??.. I have a dusky complexion...not very dark...but my skin around the ribs and back looks darker than other body parts....this was before also...but thought could be related to this, but skin around this area is not as smooth as it normally was before.Also, I face itching on my back and rib area ..I suppose using a talcum on the body dries my skin out extensively.