Symptom avoidance in Visual Snow Syndrome involves targeted modulation of glutamatergic and GABAergic neurotransmission, primarily through medications like lamotrigine and pregabalin that stabilize neuronal membranes and reduce cortical hyperexcitability. These agents aim to mitigate aberrant visual processing by decreasing neuronal signal amplification and suppressing abnormal neural oscillations in visual cortical regions, potentially reducing the intensity and frequency of visual disturbances.