Hi, I had gone through your question and understand your concerns. These sensations are called tactile hallucinations and there are several conditions that may cause such sensations, I would mention certain substances (alkool, amphetamine, cocaine, some medications), sleep disorder, a number of psychiatric and systemic diseases. If it is your first episode and related to sleep disorder or some substance, I think there is nothing to worry about. If it repeats several times I suggest you to contact your local Doctor. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions.