Dizziness, nausea, or vomiting
As you continue to sweat, your body will become increasingly dehydrated. The heat will start to affect various organs, all of which can exacerbate any of the symptoms on this list and can lead to dizziness, fainting, nausea, or vomiting.
Skin redness
In instances of both traditional and exertional heat stroke, when the body tries to cool itself down, it directs blood flow toward the skin, making it appear red. Your skin may also feel unusually clammy or exceptionally dry, depending on what type of heat stroke you’re experiencing.
Elevated heart rate or trouble breathing
Your heart is put under an immense amount of stress when you overheat. Why? It needs to pump harder and faster to make sure your body’s natural cooling systems are working to keep your temperature balanced. This could lead to trouble breathing or hyperventilating.