My skin has been itchy for over a week with no rash especially the torso and lower legs.

Dry skin?: depending on where you live and time of year, winter itch or dry skin can be a problem. Applying moisturizer several times a day may be helpful. If no improvement after a week, see your doctor for evaluation. Could also be a sign of allergy even with no rash. OTC antihistamine may help. Again if no one provement within a week, see your doctor. Hope this was helpful. Best of luck. Dr. R