Seen in adult bitches who present with alopecia and increased pigmentation round the perianal, perigenital and axillary areas.
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Caused by:
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*Cystic ovaries.
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*Ovarian neoplasia.
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===Males===
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Dogs present with bilaterally symmetric alopecia, similar hyperpigmentation to that seen with female dogs with ovarian imbalance, loss of libido and gynaecomastia. The dogs become attractive to other male dogs.