Calling ahead allows the hospital time to prepare an ice bath or other treatments. You don't want to waste a moment, because body temperature may keep rising despite your efforts. En route to the hospital, don't stop heat-loss measures. Crank up the air conditioning in the vehicle, apply ice, do whatever you can to reduce body temperature. When medication is needed to bring blood pressure down to a healthy level, it's important to understand that many things can influence the effects of the medication, making it either more or less potent.
Blood pressure is governed by three main factors and there are medications that address each one.
More fluid in the system equates to more pressure, and reducing fluid can bring the pressure down. Diuretic drugs help you lose fluid from the body, and some of that fluid will be taken from blood plasma. But severe sweating and taking diuretic drugs can complicate matters, because the combination could contribute to excessive loss of plasma volume, increasing the risk of heatstroke. This means, after the exercise, your blood pressure could drop significantly, to dangerously low levels. This creates a potentially serious situation, one that must be discussed with your doctor.