I never let it hit that high. I take something. By the time I hit 39.4, I'm at the point that I'm nearly hallucinating. I can't stay sitting upright in a doctor

I never let it hit that high. I take something. By the time I hit 39.4, I'm at the point that I'm nearly hallucinating. I can't stay sitting upright in a doctor's office and simply cannot drive myself. I wouldn't trust myself not to get lost walking 2 blocks to the hospital. I've had this happen as an adult: The doctors office had me take 800mg of children's ibuprofen and had me wait until the fever started coming down: If it didn't, they were going to call an ambulance. Sidenote: Children's liquid medicine tastes horrible. 40C (104F) isn't just a little fever, and is definitely in the danger zone for both children and adults. You should probably get to the doctor before that, in general - especially if you react as I do at a lower temperature.