Hi. Welcome to HealthcareMagic. Sweating in hypoglycemia
is induced due to cholinergic activity. Some research show that major energy source used by the eccrine sweat gland
is glucose, so in case of hyperglycemia sweating is induced. It would be difficult to comment if the green tea causing hyperglycemia, as there are various causes including concurrent medications and hormonal
factors. Please visit your doctor to evaluate such acute glucose level fluctuations.