Brief Answer:
Read below.

Detailed Answer:
I read your question carefully and I am sorry about the symptoms you are experiencing.

It is unclear from your description whether you are experiencing these symptoms only today or whether it is a recurring issue. Also I don't understand what is the condition your father had, there is no such illness to my knowledge, nor did an internet search produce any results, could it be Guillain Barre, perhaps? Or you could describe in detail what happened to him perhaps.

From the limited info, if it is a recurring issue the possibility of peripheral neuropathy must be considered. For that a neurological exam is needed to evaluate your reflexes and motor functions, as well as tests such as nerve conduction studies.
At times it can be a question also of drug side effects, both trazodone as well as flexeril can produce numbness and abnormal sensations in the limbs, weakness is less common but the two sensations can be confused.
Another possible cause could also be anxiety, but that can be discussed only once other possibilities have been excluded.
There is also a condition called sleep paralysis, temporary complete inability to move or speak, either when falling asleep or on awakening, but apart from being rare doesn't correspond to your description.

I remain at your disposal for further questions.

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