The lick granuloma is actually a lesion that can initially be red, swollen, irritated, and bleeding, similar to a hot spot (wet eczema). The dog’s incessant licking of the lesion eventually results in a thickened, firm, oval plaque.
The most common cause appears to be psychological, related to stress, anxiety, separation anxiety, boredom, or compulsiveness. Lick granulomas are especially seen in active dogs left alone for long periods of time. One theory is that excessive licking causes endorphin release, which reduces pain and makes the dog feel euphoric temporarily; that effect then causes an addiction to licking.
Find out the primary cause of the condition such as being left alone all day, being confined, and changes in the household. Try to change the conditions so you can change the behavior.
Depending upon where the lesion is on the leg, try one of our paw and leg protection products. http://www.keepdoggiesafe.com/paw-leg-protection.html
The products will protect the wound and not let them lick it. You might need to add another product to stop him from licking the covering such as bitter apple or no-lick strips.
Please let us know if you have found any other solutions so we can help our customers.