If you are someone who suffers from recurrent boils in this area then do please go and see you GP because it may be that you need a cause of antibiotics and an antibacterial wash. If this is a recurrent problem then we often prescribe a longer course of antibiotics to try and break the cycle.
This is because a giardia infection interferes with digestion and inhibits absorption of nutrients from the diet. It can also damage the lining of the intestine. In fact, this particular parasite is at the root of many cases of chronic GI inflammation in dogs and cats.
Giardiasis in Dogs. Dogs and cats can come down with giardiasis after exposure to the parasite Giardia intestinalis -- and people are also affected. After a pet consumes a cyst, the giardia develops into the feeding version of the parasite in the intestinal tract. Often, giardia poses no problem for the health of adult canines with strong immune systems, but puppies, geriatric dogs or those with compromised immune systems are at risk of harm.