Hello! My name is Dr. Aida and I am glad to attend you on Healthcaremagic! Your symptoms are suggestive of peripheral neuropathy or an electrolyte imbalance. Low blood pressure, caused by dehydration (diarrhea) could also contribute to all this clinical situation. For this reason, I would recommend consulting with your GP and performing some tests: - a resting ECG - complete blood count - a stool bacterial culture for infection - blood electrolytes for possible imbalance - thyroid hormone levels for possible imbalance. A nerve conduction study may be necessary to examine your nerves if the numbness and tingling persists. Hope you will find this answer helpful! Kind regards!