ALS and SSRIs

Recently, I have experienced muscle twitching along with weakness in my neck, throat, and arms, along with trouble swallowing. This all seems to have gotten worse over the last two months. Consequently, I have also been taking zoloft for two months. Before my neurological symptoms began, I took Lexapro and Effexor for health anxiety and panic attacks that only produced classic panic attacks symptoms like a heart attack. After I took the drugs, I began experiencing the more neurologic symptoms. I recently read a book by Harvard Dr. Joseph Glenmullen that SSRIs may be linked to Parkinsonian conditions affecting involuntary nerves and muscles. I had a normal EMG/ nerve conduction of my arms and a normal MRA/MRI of the head neck. I have never responded well to antidepressants, so this question. I'm more looking for answers and not trying to promote any agenda, but have there ever been any studies linked between ALS or motor diseases and the use of SSRI/SNRIs. If withdrawal and use from these can sometimes mimick these diseases, can they cause them further down the road from continued use. Another article I found too said that there is a theory that increased glutamate causes OCD. I also know that is a theory about ALS as well. Have there been any studies linking OCD/Anxiety with ALS or motor neuron diseases as well? Anyway, thank you for you help if anyone can offer it.