I just read this I know its 2014 hope you get this. I have the same thing I think, do you have any medical problems , anything abnormal?
This could be dry skin, eczema, or the start of psoriasis.
We'll assume dry skin for now.
Try showering instead of bathing...water is actually bad for skin...drinking it helps the skin though, so drink lots.
Apply moisturizers ( calamine if you have to ) and give your elbow as much air as possible.