<s>[INST] I am 56 years old, about 5 3 and weigh 176. I have hypertension, high cholesterol, CAD, mild asthma which is brought on by irritants, Hashimoto s Thyroiditis, and Diverticulosis (I had a colon resection 4 1/2 years ago). I often get terrible muscle cramps in my lower legs, but I have also been experiencing this feeling of pulsating (it almost feels like something is crawling inside my lower legs) and you can actually see it puckering. I ve also had a few episodes of extreme dizziness, immediately followed by swooning (feeling like I was going to pass out), and simultaneous tingling & numbness in my lips, fingers & toes. These may be two completely different problems, but for all I know, they could be related. Any insight you could give me would be much appreciated! [/INST] Hello! Welcome and thank you for asking on Chat Doctor! I passed carefully through your question and would explain as follows: 1- The muscle cramps and pulsating feeling in your legs could be related to peripheral arthropathy or neuropathy. For this reason, I would recommend performing a Doppler ultrasound of the leg vessels and a nerve conduction study to examine the nerves in the lower limbs. 2- The episodes of fainting and numbness in your lips could be related to blood pressure fluctuations or orthostatic hypotension. That is why, it is necessary to closely monitor your blood pressure values and performing a Head Up Tilt test to investigate for orthostatic hypotension. You should discuss with your doctor on the above tests. Hope to have been helpful! Kind regards,  </s>