Can you tell if you have a fever by feeling your own forehead? The surprising science behind self-checking
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4 min read
Medically speaking, a temperature of 100.4°F (38°C) or higher is typically considered a fever, but can you tell if you have a fever by feeling your own forehead?. The answer is that this common practice is surprisingly unreliable for self-diagnosis. It lacks the fundamental principle of heat transfer that makes it effective when a healthy person checks someone else.