my dogs itching and cant sit

Question
hi my name is kim i live in phila pa i currently am having a problem with my two blk labs it started almost 2 years ago when i got my puppy from tennesse she was near dead had fleas heartworms ringworms heart murmur well she is ok now but ever since both her and the dog i had have been slowly losing hair and now it has gotten even worse after they pee they will come in wit there taikl between there legs and cant sit and have to lick themselves i switched vets because i was not gettting a answer but this vet keeps telling me it is allergies well i need to know why my babies<dogs> are biting and itching and just last night my older dog ws asleep and all of a sudden ran over to be crouched to the groud tail between her legs goin in a circle like soemthing was attacking her they also are losing hair mainly on the bellies and around there butts and now on there faces i think it might be a parsite from the farm the puppy came from because my grass in my yard is all dead as wellPlease help me my email is catdogarr@aol.com my name is kim kaufman my dogs are my eveything and i cant stand seeing them suffer thank you  

Answer
I would recommend that they be treated with Ivermectin (2 injections 2 weeks apart) to rule out any skin mites.

In addition, I would recommend putting them on a fish-based diet such as those made by Verus, Flint River Ranch or Wellness in case there is a food allergy.

You can also give them Benadryl to help reduce itching at a dose of 1 mg per pound three times a day.