Theres lots your boyfriend can do. He needs to cut down the amount of acid in his system. Certain foods will make you more acidic eg red meat, dairy, sugar, caffeine. Make sure he drinks plenty of water 1.5litres a day. Eat lots of good fats eg oily fish, seeds, olive oil, avocadoes. Devils Claw is a herb that targets the cause which is an auto immune condition. Its also anti-inflammatory. Liquid best, cant be used if he has a stomach ulcer. Also Rosehips are great for inflamation. Get a Omega 3 supplement too. 1000-2000mg of fish oil a day great. Hope that helps!!