Hello just wondering if anyone has any experience of chronic worms? My son is getting them over and over. We have done everything - Ovex over and over. Hygiene etc. He has now had them for 3 weeks. We Ovexed and it took 4 days to ease off then we ovexed again just in case but now they are back AGAIN. He is so upset about it. Doctor said there isn't anything else they can give. We are just at our wits end with it. Anyone have any advice/experience? Could it be something else? Many thanks.