Hi, Welcome to HealthCareMagic.com I am Dr.J.Mariano Anto Bruno Mascarenhas. I have gone through your query with diligence and would like you to know that I am here to help you. The Painful Tingling Sensation on the Left Side of the face, and shocking sensation over lip, tongue, inside mouth is suggestive of a condition called Trigeminal Neuralgia You need to undergo further evaluation for this This can be either due to MS or due to a aberrant vascular loop or some other reasons Treatment depends on the cause of this neuralgia hence we need to first find the cause Please consult a Neurosurgeon in Your Area Hope you found the answer helpful. If you need any clarification / have doubts / have additional questions / have follow up questions, then please do not hesitate in asking again. I will be happy to answer your questions. In the future, for continuity of care, I encourage you to contact me directly in HealthCareMagic at http://bit.ly/askdrbruno Best Wishes for Speedy Recovery Let me know if I can assist you further. Take care.