Zinc reactive dermatosis

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The zinc-reactive dermatosis is a skin disease in dogs caused by a lack of essential trace element zinc is caused.

to form

There are two forms of the disease: Syndrome I and Syndrome II.

Syndrome I.

When syndrome I are especially Siberian Husky and Alaskan Malamute , rarely Bull affected. A genetic cause is suspected here, which leads to a reduced absorption of zinc in the intestine.

Clinically, this form manifests itself primarily through skin changes on the lips , auricles , eyelids and chin . This is where reddening , hair loss and stubborn dandruff appear . In addition, oily skin , dull coat and excessive cornification of the pads can occur. The disturbed skin barrier promotes secondary infection with bacteria ( pyoderma ) and yeasts ( malassezia dermatitis ), which can lead to severe itching.

Syndrome II

From Syndrome II especially young growing large breed dogs are concerned, whose diet rich in phytates , or too much calcium contains. These substances reduce the absorption of zinc in the intestine.

Clinically, the animals often also show a reduced general condition, reluctance to eat and swelling of the lymph nodes . Excessive cornification and crevices (fissures) dominate the skin in more exposed areas of the body such as the balls of the feet and the nose surface. Secondary infections are also possible.

treatment

In syndrome I, zinc salts ( zinc sulfate , zinc methionine ) must be given for life . Since these irritate the gastric mucosa, the total amount should be divided into at least two doses and given with food. The feeding of calcium-rich feed (cheese and other dairy products) should be avoided because of the resulting reduced zinc absorption in the intestine. Sometimes it is necessary to give zinc intravenously at the start of treatment and when symptoms return. A small dose of cortisone can also help alleviate the problem, as the active ingredient increases the absorption of zinc in the intestine and reduces sebum formation.

In syndrome II, a temporary zinc substitution for one to two weeks is usually sufficient.

Supportive can topically to seborrhea reducing shampoos and excessive at the points keratinization propylene glycol are used. Appropriate treatment is indicated for secondary infections.

literature

  • Chiara Noli, Fabia Scarampella: Practical Dermatology in Dogs and Cats. 2nd edition Schlütersche Verlagsanstalt, 2005. ISBN 3-87706-713-1 , pp. 359-360.