<s>[INST] last night I was drinking I only had three bottles and half a vodka and when I went out for a cigarette I felt I was going to collapse so I sat down and then had to go inside but I felt sick and was sweating profusely with my heart racing. I took me shoes off and put my head as low as possible to try to help. This also happened to me on monday not drinking but I had smoked a little bit of weed. This time I had to lie on the floor. Also happened me around 2 weeks ago and I was drinking on this occasion again I had to lie on the floor. Apparently when this happens my lips go blue and all colour goes from my face. I have collapsed with a hangover one day also and almost twice when working out. I have pins and needles very regularly of late and lots of headaches - with some back neck and wrist pain. Do you have any idea what this could be?? [/INST] HelloThanks for posting at Chat Doctor. I have gone through your description. I would have been able to help you better had you provided your age. Your symptoms need urgent attention and investigation. It may be a vasovagal syncope. But since there have been multiple episodes of it, you must get investigated. These symptoms can also be caused due to heart issues and blockage of the neck vessels which supply blood to the brain. I recommend an ECG, 2 d echo, carotid artery Doppler and x-ray of chest and cervical spine. Also, please get your blood tests -CBC, it D, it B12, and fasting and post lunch blood sugars. Please revert with the above test results. Please also measure your BP regularly. If all these tests are normal, an MRI +MRA brain should be done. Please refrain from any alcohol, tobacco and weed. Wishing you good healthRegards </s>