Nasal Solar Dermatitis
Nasal Solar Dermatitis, also known as Collie Nose or Discoid Lupus Erythematosus (DLE), is a chronic, immune-mediated skin disease affecting the nose and facial skin, often triggered or worsened by sun exposure.
Detailed Description
DLE is an autoimmune condition where the immune system attacks skin cells, leading to depigmentation, ulceration, and crusting of the nose and sometimes the face. Sunlight exacerbates the condition.
Common Symptoms
- Loss of pigment on the nose
- Crusting
- Ulceration
- Bleeding of the nasal planum
Management Options
- Topical corticosteroids
- Sunblock
- Vitamin E
- Immunosuppressive drugs (severe cases)
Frequently Asked Questions
Is Collie Nose contagious?
No, it is an autoimmune disease.
Can Collie Nose be cured?
No, but it can be managed.
Does sun exposure cause Collie Nose?
Sunlight worsens the condition but is not the sole cause.
Can I use human sunscreen on my Collie?
Only dog-safe products should be used.
Is Collie Nose painful?
It can be uncomfortable, especially if ulcerated.
Condition Details
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Typical Age of Onset
Young adults to middle-aged dogs
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Testing Available
No
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Diagnosing Methods
Physical exam; Skin biopsy
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Preventative Measures
Limiting sun exposure; Use of dog-safe sunblock
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Related Conditions
Pemphigus, Mucocutaneous pyoderma, Nasal trauma