Ridecamp: [RC] unusual sweat patterns/heat cycle??

Hi Ridecamp-
    Hoping someone might have some experience- and reassurance for me- 
regarding my 12 yr old Arab mare.  Went on a light conditioning ride a couple 
of weeks ago during which she worked up her usual level of sweat- this horse 
sweats a lot!  Back at camp, normal sweat areas (under saddle, neck) were dry 
but there were very wet areas that developed after about an hour and stayed 
wet- places she ordinarily does not get wet- flanks, udder area, and behind 
the saddle area on her back.  She repeated this the next day. with the 
additional change of developing this new sweat pattern during the ride.  She 
was abnormally irritable and jiggy on the trail as well- just not her normal 
self.  Again these new wet areas stayed wet for hours after all the normal 
sweat had dried.
    Once home, she went into a RAGING heat cycle- screaming at everyone. mare 
and gelding alike, and was out of sorts for days.   This mare normally has 
almost silent cycles and does not exhibit the usual "mare-ish" behavior, so 
having her act this way, especially in the Fall, has me puzzled - and also 
wondering if the sweating thing might be related-  knowing how hormones can 
mess us all up in many ways!
    Help/advice once again from RideCamp greatly appreciated!  nikki

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