hey I am 30 min west of ft worth & not far from you.. We can PM each other some.. Ok hot spots are usally will be a red area & could have white sweat & will look a lot like a skin rash.. Trust me my one baby that had it would want to lick or scratch the area all the time & of course that would stay iritated & then that of course would make the hair be gone from that area.. Now my vet would give hydro ointment & a cooling spray & oil tablets for the dog to take (due to the skin get very dry) & last but least Benadrel tabs.. We doctored morning & at night.. Now keep in mind my puppys are outside dogs & this would only happen in the hot months May-August..