Changes

===Pharmalogical Testing===

===Pharmalogical Testing===

* Topical ocular administration of dilute pilocarpine - miosis implies a postive result. However, not all dogs will respond. Response is dependent on damage to the postganglionic parasympathetic neuron that results in supersensitivity of the iris muscle dogs.

* Topical ocular administration of dilute pilocarpine - miosis implies a postive result. However, not all dogs will respond. Response is dependent on damage to the postganglionic parasympathetic neuron that results in supersensitivity of the iris muscle dogs.

* IV or SC administration of atropine (a parasympatholytic)

* IV or SC administration of atropine (a parasympatholytic) - lack of increase in heart rate implies a positive result

* ID administration of histamine - the wheal and flare response may be dampened in those with dysautonomia

* ID administration of histamine - the wheal and flare response may be dampened in those with dysautonomia

==Differential Diagnosis==

==Differential Diagnosis==