Dermatographism in dogs?

RE: Dermatographism in dogs?

David Scarff — Thu, 14 May 2020 08:10:42 GMT

Hi, I've seen a very few (3-4) dogs that have reacted to all the allergen sites and the negative control site on a skin test. These anecdotally have all be less than 12 months old, and have reacted normally to skin testing the next year.

RE: Dermatographism in dogs?

Rosario Cerundolo — Fri, 08 May 2020 14:26:05 GMT

Hi, In addition to what Mark said and I agree with, I would like to add that I have only seen dermatographism in horses where you can cause an urticarial reaction just by touching the skin, you can actually write on the skin. Dermatographism is an exaggerated wealing tendency when the skin is stroked. It is the commonest form of physical or chronic induced urticaria in man.
In my opinion dogs can get itchy after a bath if their skin is dried too much with e.g. hair drier or if they are bathed with something like Hibiscrub which has no emollient/moisturiser in it.

RE: Dermatographism in dogs?

Beats — Fri, 08 May 2020 09:38:09 GMT

Thanks Mark

RE: Dermatographism in dogs?

Mark Craig — Fri, 08 May 2020 09:13:00 GMT

Dermatographism is more commonly discussed in relation to intradermal allergy testing ie as a cause of false positive intradermal test reactions. An increase in itchiness following washing is not uncommon in dogs and is probably associated with a range of different factors, of which a pressure effect might occasionally be one, but don't think it has been investigated.