This clinical article documents the results of discontinuation:

Flu-like symptoms, Fatigue, Lethargy, General malaise, Muscle aches/headaches, Diarrhea, Insomnia, Nausea, Imbalance, Gait instability, Dizziness/lightheadedness, Vertigo, Sensory disturbances, Paresthesia, “Electric shock” sensations, Visual disturbance, Hyperarousal, Anxiety, Agitation, and more...

They also explain what meds are most likely to create these symptoms on discontinuation.