Daisy again

Well, Daisy finished the steroids last Sunday.  I called David.  I was so happy.  Her nose had cleared up and she was normal. Well, I was calling back on Tuesday.  She had a slightly bloody nose.  David thinks it is an allergy to something growing in the yard.  He mentioned purple flowered thistles, which are very common here.  Well, I have been fighting them since last fall.  I have been digging them up and putting them in the garbage.  However, I live near the freeway and the medians are covered with these plants.  David says she can just inhale them, so I guess I am stuck.  By Wednesday, she had a white spot on her nose.  She is losing pigment again.  David put her back on steroids for a month, then allergy testing to the tune of $300 to see what she is allergic to, then treatment.  My goal now is to have noting in the back but much and rocks.