i would be concerned as well especially since steering with both arms is a critical part of driving. there is absolutely no way to blindly offer you a patient-specific explanation for these episodes over the internet based solely on your vague description. you need to see your medical provider so that you can be properly examined and diagnosed. not something that can be done over the internet without a more complete medical history and examination. i would advise you against driving until you can be evaluated.
what can cause arms to fall off the steering wheel involuntarily when driving? . this happened 3 times already. can pick arms up to keep driving but am getting scared.