Rough hands are most common skin condition which u face in winter season which can be aggravated with many factor like it your job if it involves handling chemical substances or wet work  or with excessive hand washing which will lead to damage to protective layer of skin which maintains adequate hydration . if u are doing any such work u have to take necessary precautions of using a hand glove while handling such and do apply a good medicated moisturiser like Venusia max .if its still persisting consult a dermatologist as many skin disorders tend to flare in winter season due to dry environment.