Has anybody ever heard of anything like this?

Yes many of the incidental substances in medicines can be reactionary. Preservatives especially. I’ve noticed they have some eye drops for Glaucoma with or without preservatives. Guess you kinda make yourself a guinea pig until you find the right combination of things that help you. This blog sure does help with the research.

Is it possible that the muscle relaxer reacted with another drug you were on?

I have learned from experience, and ALWAYS look up any new drug prescribed to me before I take it. This has actually saved my life. I have allergies to many, many drugs. Different drugs often interact with each other. The insert you get with your medication only gives you very superficial information. To get better information, you need to Google the name of the drug and monograph. If you do this, you will get all of the counter indications and adverse effects that are supposedly known. This way you can check to see if your new drug it’s related to a drug you are already allergic to, or if it is counter indicated for you for some reason, or if it interacts with another medication you are on. You can better assess the risk versus benefit of any particular drug by reading the monograph. Doctors don’t always check these things when prescribing a drug. To be fair they always don’t have time to do this. Also, rare interactions do occur and they won’t be listed anywhere, but in the monograph. If you’ve ever had a rare reaction, it’s especially important to check. Your pharmacist is also a good ally as their specialty is pharmacology. If I have a complicated question about a drug, I am more inclined to call my pharmacist, then my doctor. Usually the pharmacist has more time to talk to you and has a broader depth of information about particular drugs then say a GP would. Also, at least in Canada a consultation with the pharmacist is free.

That’s the only thing I took, I was on nothing else

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I was very surprised to read that you have pin pricks( it is also called paresthesia) from a muscle relaxer. Have you taken muscle relaxers for any period of time? I am not trying to throw a wrench here and I am not a Dr. but I have had pin pricks. I have an odd story. I woke up one morning and I had full onset everywhere of pinpricks including my eyes. I asked my neurologist how many of his patients had what I did and he said none it is rare. But here is my question do you know if you have stenosis in your back? Stenosis is a narrowing (an hour glass has a narrowing in the center of it) So I do know that with stenosis you can have pin pricks also. You also said you hurt your back at the gym. I looked up muscle relaxers and I couldn't find anything about pin pricks. Have you had an MRI with contrast because that would show things if you have it. I know you need answers. Believe me I know how it feels. I went to a neurologist and they did a bunch of tests-bloodwork, genetic testing and finally a skin biopsy. It showed I have small nerve fiber that is idiopathic meaning no known cause. It really is nerve racking when you need answers and I fully understand that. I have severe stenosis in my neck one area is both sides and one is one side in the disc. I have a brother who had (sciatica-which is pain) down both legs. He had a herniated disc. He had surgery for that. I certainly cannot diagnose you but seeing a neurologist should help you find out what is wrong. I also think an MRI with contrast should give them a picture of things. I do read things but I am interested in knowledge about my issues. I am a retired nurse so I do understand most medical words. Some I have to look up some because I never heard of it. I do know that as we age and I admit I just turned 68 okay that if you took a random set of people off the street and did MRI's on them you would find back degeneration. That is called aging. It is hard when you have to wait to see someone. Been there done that. Here is one thing that I like to do. Take a note pad and write down what happened to you. Don't write a book. Keep it short and sweet. Then write down your questions that you want to ask the Dr. I do that because if I don't I might get home and the one thing I really wanted to ask I forgot. Of course you need answers. The doctor will ask questions but I think some notes and questions would be good for you to write down. I wish you the best of luck when you see the Dr. and hope you find answers. I am still looking for some. I have an appt to see a neurosurgeon in November but I am trying not to get hopes up that he will be able to solve my issue. The most important thing is you are going to the Dr. to find out. Be prepared it really helps.

I agree with @rnlorena. It seems you should have an MRI, if you haven't already. The injury at the gym seems more relevant than the muscle relaxer.

I think it does. Most of my nursing career I worked as a hospice nurse. Part of that requires a lot of listening and understanding. That was the best part of nursing that I ever did. I can relate to people who are having a rough time because I have had rough times too. When you have a lot going on with your health and you are worried and unsure and can’t get answers it creates anxiety which can take its toll in addition to everything else. Reading peoples stories have given me different ideas about things. Someone once said to me don’t go down that rabbit hole. You do have to keep it in perspective when you read medical things. I firmly believe that reading has helped me to understand things that I didn’t know about my medical issues. I certainly think back when I was diagnosed with small nerve fiber with no known cause. The doctors didn’t tell me much of anything. I learned by reading that small nerve fiber can affect your autonomic nervous system meaning you heart, your blood pressure, you stomach and intestines. That is something important to know. I also read that you can have an autoimmune disease and not know it. I like this site because people share things. Something that you might say could help someone else. I have noticed a big change in healthcare that is disturbing to me. Doctors are seeing more patients and have less time for you. I don’t know if anyone else has experienced it but when I asked my ladies group they told me their stories. One thing I think is important is to be prepared with questions. Keep it short and sweet but let them know your concerns. I have a fantastic cardiologist who I bring my questions to. She answers.

Thank you

I took a muscle relaxer and 15 minutes later I had pins and needles from head to toe. I went to the emergency room they did a CT scan. They found a very small infraction on my basal ganglia. They ordered an MRI, which confirmed that .they treated me a stroke for four days they gave me every cardio test, they had a neurologist come in and look at the MRI. He told them that it was an old in fraction. and my symptoms were not caused by a stroke they said my vitamin B 12 was at the low range of the scale. I didn’t know anything about vitamin B12 you would think they would’ve gave me a shot of vitamin B 12 . That’s probably what caused this situation. I have no idea. knowing what I know now I can’t believe that nobody gave me vitamin B 12 I didn’t get any until I saw a neurologist a couple weeks later and he suggested that I go down to the grocery store and buy some vitamin B 12 and take it. So I’ve been taking 1000 MCG’s since then and I saw my primary care physician and I asked him about the vitamin B 12 and he’s like well. It was on the low ranger the scale it’s not like you didn’t have any in you. The thing is is that I eat so healthy I eat red meat I eat salmon, wild salmon, sardines pork, chicken , vegetables. had my B12 checked again and they said it’s around 500 which is normal . The healthcare system is broken and now I am too. by the way, I talk into giving me an MRI of my cervical spine, and my thoracic spine . I couldn’t get one of my lumbar, but my spinal cord is right in the middle of where it should be with nothing pressing on it I don’t know about the lumbar. I’ve had the neurologist and a spine surgeon, submit for lumbar MRI. Insurance company doesn’t want to pay for it because I think the Hospital spent so much money on the missed diagnosis but now the insurance company is giving me a hard time about unnecessary requests from the doctors ordering anything. What a nightmare.