Yes. We define heat stroke
as a combination of hyperthermia
(>41°C, though can present with lower temperatures), often with loss of the capacity to dissipate heat and CNS impairment.
Loss of ability to sweat is often a late and ominous sign. Don't sit in the sin for that long again. You can go into shock
. Always keep hydrated and try to avoid exercise in the heat (direct sun).
If you are shaking and feeling cold
but hot on the outside, it's best you consult a Doctor. Ring NHS Direct on 0845 4647