Thick powerful Domestos cleans tough dirt and stains, removes mould and bad smells and is your powerful weapon to-kill germs dead(Peudomonas aeruginosa, Escherichia coli, Staphylococcus aureus and Proteu vulgaris) all around the home.
You have to kill the tinea / ring worm / jock itch bug that is still lurking in the shower recess, bath tub clothes etc, and also avoid public showers.
Industrial strength bleach such as Domestos Disinfectant Bleach Regular willl kill the bug as in my quote. Do not use on your body though.
Continue using creams to help get rid of the itch.