Hi, Thanks for the query. During pregnancy with progression of gestational age the size of uterus increases leading to stretching of the skin over abdomen. This leads to separation of collagen fibers which causes dryness and itching. For more details:http://srsree.blogspot.in/2012/05/itching-over-abdomen-in-pregnancy.html As liver disease can also cause severe itching better to get it done blood tests also which will rule out that possibility. Take care.