Skin Discolouration and Tomoxifen/Zoladex

Hi,just wondered if any of you ladies on hormone therapy have had any skin problems.I finished my treatment at end of 2010(chemo,mastect,rads) and then started Tomox and zoladex injections.I now have dark patches of dry skin on back of my hands and leg that are slowly growing.My GP doesn’t know what it is but thinks it could be related to the medication.I’ve not heard of this and think i should be seen by a dermatologist?? It is not sore or itchy just unsightly. Any response would be greatly appreciated. x