I get Jock's itch, facial and neck rashes and itch and dry skin the next day I consume alcohol. What could be the problem? I am 46 years old, on obese side, drink alcohol, say weekly...sugar and cholestrol border line with poor eating, not on medication

Easy to explain. It makes you sweat more and move less while sleeping. I'm glad you're eager to make a change. You're still young and probably vigorous. Head down to the local gym or sports center, let others see that you're working hard on your body, and they'll accept you as a friend and support you in your body transformation. A lot more is at stake than just the skin in your groin and neck. Best wishes.