alopecia X

disease

Also known as: black skin disease

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Last updated

July 22, 2026

Quick Summary

Alopecia X is a condition that causes hair loss, primarily in dogs, though it can affect other animals. It is characterized by a symmetrical loss of hair, often starting on the trunk and progressing to the limbs and tail, while the face and paws typically remain unaffected. The skin in the affected areas may become darkened (hyperpigmentation) and dry. The exact cause of Alopecia X is unknown, but it is believed to be related to hormonal imbalances or a genetic predisposition. It is not a life-threatening disease, but it is a cosmetic concern for owners. Treatment options are varied and may include neutering, hormonal therapies, or topical treatments, but success rates can differ.12

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Pomeranian
Care and upkeep
…from a painless disorder called alopecia X, or black skin disease. It first appears as areas of hair loss, and the exposed skin may eventually turn black. Affected dogs should wear shirts or sunscreen to prevent sunburn. In addition, some Poms that have had their coat clipped may not regrow…
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…from a painless disorder called alopecia X, or black skin disease. It first appears as areas of hair loss, and the exposed skin may eventually turn black. Affected dogs should wear shirts or sunscreen to prevent sunburn. In addition, some Poms that have had their coat clipped may not regrow…
Read More