the penis is covered by skin and skin can itch for hundreds of reasons. a common cause would include yeast (balanitis) or simple dry skin like you described. contact dermatitis (allergy) to soaps or laundry detergent is another possibility. a yeast infection would respond to an over-the-counter antifungal cream; dry skin or allergic rashes will respond favorably to hydrocortisone cream (followed by a moisturizer). some people mix them together and use both so this may be something to try. if it doesn't work see your medical provider or a dermatologist for a consultation and exam.
circumcised and foreskin is very itchy. i am a 40 yr old and was circumcised at birth. . the skin left over has one patch that from time to time is very itchy with an almost burning sensation. seems to come and go. it's a small patch of skin that feels very dry. has been the case for around 6 months. . is this an std?