Out of nowhere my left elbow has become really dry leaving like this white dry scab. i've tried everything to moisturize it but it will not go away?

Need to see pt.!: Unfortunately, there are certain limitations imposed by this format which include the lack of a photograph of the skin lesions about which you requested information, So it's impossible to tell you the correct diagnosis and/or therapy, Unfortunately. There are various causes of scaly elbows including dryness or skin eczema,, psoriasis and many many other so you need to see a dermatologist.

Consider HT consult: Would really need to see the rash to give advice. You can upload images of your rash as well as the history of your present problem with an online consultation here at Health Tap Several images of the involved areas in sharp focus and including closeups and wide angle would be helpful. If you choose an INBOX consultation you need to make yourself available to answer doctors questions.