June 24, 2025, 8:42 am | Read time: 4 minutes
Stress in dogs is not only evident through restlessness, panting, or trembling but can also manifest through their skin in some cases. One sign of this is the so-called stress dandruff—dry, whitish flakes that suddenly appear in the fur. PETBOOK spoke with various experts to explain the causes and how owners can effectively help their dogs.
I still vividly remember that Lotti, my friend’s dachshund, would suddenly have small white flakes in her fur whenever she had to take the elevator or was otherwise stressed. I’ve never seen this in other dogs, but it might be because of her jet-black fur, where the flakes are particularly noticeable.
Stress Flakes Appear Spontaneously
However, stress flakes are not uncommon, as a dog’s skin is a sensitive organ. When a dog is stressed, the natural balance of the skin is disrupted. The sebaceous glands then work unevenly, the skin cells renew faster, and the dead cells shed more. These small particles then fall out of the fur as visible flakes.1 This was clearly visible with Lotti.
The triggers for this can vary, says Berlin dog trainer Katharina Marioth. “Stress flakes are a visible sign of internal tension–they can occur with both negative and positive stress. An exciting visit to the dog park, intense training, or even joyful anticipation can lead to the sudden appearance of fine, whitish flakes.”
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Stress Flakes Should Be Clarified if in Doubt
Veterinary visits, moving, or even boredom can also trigger stress flakes. “In stressed dogs, acute but short-term flaking is often seen, especially on the back, flanks, or behind the ears. This is a clear indication of emotional pressure that should be taken seriously,” explains veterinarian Dr. Marco Fragoso from the Albert Einstein College of Medicine in New York in an interview with PETBOOK.
Usually, the flakes disappear on their own once the situation calms down. In some cases, however, the skin remains out of balance for longer, or flaking occurs regularly. In such cases, dog owners should take a closer look and, if in doubt, take action, advises the veterinarian.
Not All Skin Flakes Are Harmless
Stress flakes are usually dry, fine, and visibly fall out when brushing the fur. The dog may scratch slightly but shows no skin inflammation or oozing spots. However, the symptoms should not be taken lightly, says the expert.2
“A thorough examination is crucial because not all flakes are harmless. Skin fungi, parasites, allergies, or hormonal disorders like hypothyroidism can cause similar symptoms,” warns Dr. Fragoso. The first step should be a visit to the veterinarian if the dog frequently or persistently flakes. There, an examination of the affected areas, microscopic tests, and possibly blood tests can determine if there is a medical cause.
How Owners Can Support Their Dogs
Only when serious skin diseases are ruled out should stress be considered as the cause of frequent flaking. “If medical causes are excluded, owners can support their dogs by ensuring calm, security, and clear communication,” explains dog trainer Katharina Marioth. “Relaxation through rituals, physical contact, and predictable routines help the dog cope more calmly with its environment–and prevent flakes.”
In addition to identifying and reducing stress sources, owners should consult a dog trainer or behavior therapist if the situation does not improve for the pet. Moreover, the right diet can also promote the dog’s skin health. A high-quality diet with omega-3 and omega-6 fatty acids strengthens the skin and coat from within. Supplements with biotin or zinc can also be beneficial. However, it is best to consult with a veterinarian here.
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Additionally, dry heating air can further irritate the skin. Therefore, owners can support their pets with the right indoor climate at home. Humidifiers or natural materials in the sleeping area (e.g., cotton instead of synthetic blankets) can help protect the skin.
“Often, it’s a combination of small changes that ultimately have a big impact. The skin is a mirror of the soul–this applies to dogs as well as humans,” concludes veterinarian Dr. Marco Fragoso.