Why does my dog have black spots on her hind legs that come and go?

Question

Is black pigmentation on hind legs normal or could it be something else? Usually the pigmentation disappears on and off. The vet has checked it once and said that it could be yeast infection or her anal gland needs to be emptied. Can you offer some advice on what to do? Thanks! Pet's info: Dog | Maltese | Female | unspayed | 4 years and 1 month old | 4 lbs

Dr. Strydom, DVM · Accepted Answer

Hello there. Great question! Hyperpigmentation can be caused by many different things: 1. Hypothyroidism (low functioning thyroid) – Up to 33% of dogs diagnosed with hypothyroidism showed signs of hyperpigmentation as one of their symptoms 2. Systemic Lupus Erythematosus – Some dogs diagnosed with lupus 3. Allergies – If your dog experiences allergies he may also develop hyperpigmented areas on his skin 4. Malassezia – Is a yeast infection that often has hyperpigmentation as a symptom 5. Demodicosis (skin mites) – Is caused by a mite and is a lesser known cause of hyperpigmentation Pseudo-Cushing’s Syndrome – Is an endocrine disorder that is common in dogs middle age and older and can have hyperpigmentation as a result The skin may go back to normal color if you can treat the underlying cause. That would entail some advanced testing with your vet. What you can do is try to used a medicated shampoo like Malaseb. http://www.allivet.com/p-299-malaseb-shampoo.aspx?gclid=CMut-Oat69QCFZOIswodc3oBAQ This shampoo is for yeast and bacteria. Lather it on the dog, leave it sit on the coat for 10 minutes and then rinse thoroughly. Use 2-3 times a week. If you notice no difference then I think you should do some advanced testing with your vet. I hope this helps! Best wishes to you and Bella!

Why does my dog have black spots on her hind legs that come and go?

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