A member asked:

How reliable are forehead thermometers?i felt a bit feverish & i decided to check my temperature,but it keeps varying from 36.5 to 38c.what do i do?

A doctor has provided 1 answer
Dr. Milton Alvis, jr answered

Specializes in Preventive Medicine

forehead thermometers may be quite accurate yet simultaneously very misleading. Why? Because they measure local skin temp, not core body temp, the key concern. When brain wants core temp to ↑, blood flow to skin & skin temp ↓es to minimize heat loss, & visa versa. Stomach, bladder, rectal temp most reliable indicators, under tongue next best. Skin temp of very limited value, often misleading.

Answered Aug 11, 2020



Still have questions?

Get the best care from a doctor who knows you.

Book a Video Appointment
Sponsor Content

Related Questions

Online Primary Care Doctors Accepting New Patients

$44 video appointments available today with a membership as low as $15/month

Book a Video Appointment
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

Meet your new favorite doctor