Hi Antonia.
Like you I suffered hayfever,actually allergy to tree pollen,very badly in the UK
For two years whilst in Turkey it seemed to have gone,however this year it has returned with a vengence,interesting to see that tree pollen this year was reported in the Land of Lights as the cause of the yellow film on the sea in Fethiye Bay.
I recently changed my tablets {on the advice of a UK doctor}from one containing Desloratadin which were proving ineffective to some with Acrivastine which so far has been brilliant.
I think the allergy testing people may go under the name of Bioresonance,And they are in Fethiye in the area behind the new Finans Bank Building on the 22 Metre Road sorry I havn't got more specific directions I got this info about third hand.