I agree with the above posts, a vets visit is in order!!! Fleas or stress licking most likely. Though ring worm is quite common in cats and causes bald patches, vet holds a Woods lamp next to bald skin and it glows if ring worm present. Also a hyperthyroidism also causes hair loss, which REALLY needs treated asap. It really is important people get their male cats 'snipped', SSPCA is over run with cats, so irresponsible!!!! Poor thing sounds like he won't get a vets visit, if you won't even cough up for him to be neutered. Just hope you get an answer on here lol. TAKE HIM TO VETS!!!! There are charities that can help you with costs!