You are right in your 'otherwise' thinking. Herpes doesn't cause the type of skin lesions (itchy bumps that don't become blisters) or lesions in the locations you describe. Scabies, a skin infestation by tiny (almost microscopic mite), sounds possible, and commonly includes the penis as well as lower abdomen, hands, and other areas. Or it could be any number of other skin conditions. I can only guess; you'll need to see a health care provider, ideally a dermatologist. You'll never get a clear diagnosis by searching the web or online advice; your symptoms are too nonspecific.
Good luck-- HHH, MD
Thank you for all your help.