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My chihuahua has developed a very dry and cracked area

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Hi, my chihuahua has developed...
Hi, my chihuahua has developed a very dry and cracked area across the top of her nose, from one side to the other. It looks quite sore, but it doesn't seem sore to her. Two yrs ago she was diagnosed with hydochelpus and syringomelia ( mayb not spelt correctly). Could any of these conditions cause this to happen ? What can I do to improve this,
Thanks
Elaine
Submitted: 2 years ago.Category: Dog
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Answered in 32 minutes by:
6/24/2015
Dog Specialist: Dr. Kara, Dog Veterinarian replied 2 years ago
Dr. Kara
Dr. Kara, Dog Veterinarian
Category: Dog
Satisfied Customers: 18,384
Experience: Over 20 years of experience as a veterinarian
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Hello, my name is***** and I have over 20 years of experience as a veterinarian. I am sorry to hear that Tia has a very dry cracked area across the top of her nose.I do not believe that this is related to her diagnosis hydrocephalus and syringomyelia, unless she is repeatedly rubbing and traumatizing her nose because of the way those conditions make her feel.Some dogs get proliferative nose leather as they age which is called idiopathic nasal hyperkeratosis. We can see foot pad thickening as well with this disease process. The nose becomes dry, rough and overproduces skin cells leading to flaking and crusting, especially on the top of the nose. Sometimes we can see cracks and ulcers too, but the color of the nose doesn't change.Treatment can include the daily topical administration of Kerasolv (made by DVM pharmaceuticals; salicylic acid, sodium lactate and urea in propylene glycol), Bag Balm or tretinoin gel (Retin-A;Ortho). Petroleum jelly (Vaseline) can be used as well.It can help to apply water compresses for 5-10 minutes prior to application of the above products.Oral vitamin A may also be of benefit. Dosages range from 8,000 to 20,000 Units twice daily.Nasal Hyperkeratosis Associated with Xeromycteria ("Parasympathetic" nose) is nasal skin proliferation in response to poor oil gland production secondary to the oil glands being damaged by an ear infection. If we resolve the ear infection the inflammation resolves, the oil glands begin working and the nose returns to normal. In the meantime the same treatment that is used for idiopathic nasal hyperkeratosis is used.if her nose is raw or crusty, and has changes in pigment color too then that could be painful and signifies more serious diseases.A fungal infection (ringworm) or a bacterial infection are other possibilities, especially if she goes outdoors and roots her nose around into things. Diagnosis is by culturing a swab taken from the nose debris and treatment will depend upon culture results.There are other causes of crusting with erosions and pigment changes of the nose, including solar dermatitis (sunburn), squamous cell carcinoma, or autoimmune skin diseases like Pemphigus or Lupus. Diagnosis is via biopsy.Treatment can range from topical immunosuppressive drugs (steroids, cyclosporine, or tacrolimus), as well as antibiotics with an anti-inflammatory effect (tetracycline and niacinamide), and sometimes oral immunosuppressive drugs depending upon the response to therapy and how severely the patient is affected.Ideally because there are so many things that may cause what you are seeing, and while some are relatively benign others can signify more serious disease, it is best your pup see her veterinarian.For now if her nose is raw I recommend getting in plenty of fluids because she will lose fluids with a raw nose. I recommend adding low salt beef or chicken broths or warm water to canned foods.I would recommend puncturing a vitamin E capsule and dribbling it on her nose daily to keep her nose leather soft and protected and help with healing.Best of luck with your girl, please let me know if you have any further questions
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