Pfizer Animal Health recently announced that they will be stopping production of the flea and tick preventative ProMeris. The product has been linked to an increased risk of dogs developing pemphigus foliaceus, a potentially serious autoimmune disease. Affected dogs typically develop crusts and ulcers around the eyes, ears, foot pads, nose and groin. Pemphigus foliaceus can develop spontaneously or as a reaction to medications, including ProMeris.
If you have been using ProMeris on your dog and his skin looks normal, do not be worried. Simply discontinue use of ProMeris and switch to another form of flea and tick prevention. Frontline Plus has been in widespread use for many years and has a good safety record. If, however, your dog has unexplained skin lesions, take him to the veterinarian. Pemphigus foliaceus can be successfully treated with drugs that suppress the immune system (e.g., prednisone). Many dogs are eventually weaned off of these medications and never experience another episode of pemphigus foliaceus.