Ice pack test in the diagnosis of
myasthenia gravis
Diogo Fraxino de Almeida, Rafael de Figueiredo Radaeli,
Aluisio Cláudio Mentor Neves Couto Melo Jr
Arq Neuropsiquiatr 2008;66(1):96-98
..."The ice pack test is a very simple, safe and cheap procedure that can be performed by the physician at the bedside.
Moreover, the ice pack test does not require medications or expensive equipment and is free of adverse effects. It consists of the application of an ice pack on the patient symptomatic eye for 3 to 5 minutes. The response is positive when there is improvement of the diplopia or ptosis (increase in at least 2 mm of the palpebral fissure from before to after the test). Considering that the pure ocular form of MG is frequently not detected by the traditional tests available, the ice pack test is an attractive diagnostic method for MG..."