Ankit Verma Ankit Verma Asked 9 months ago

When does a high fever become dangerous?

My elderly mother has a fever, and I'm getting a little worried because it's quite high. At what point does a high fever become dangerous, especially for older people?

7

7 answers

Sunita Devi Sunita Devi Joined Jun 2026 4 months ago
Most liked

Fevers can be so incredibly scary, especially when they get high. For me, it's not just the number but how unwell the person feels. If it crosses 103°F (39.4°C) in adults, or if it's accompanied by severe pain, difficulty breathing, or confusion, that's when my heart really sinks and I know it's time to call the doctor without delay.

Neha Agarwal Neha Agarwal Joined Jan 2026 9 months ago

I just had a really bad fever last month. For me, when it hit 103°F and I started feeling really disoriented and couldn't keep food down, that's when I knew it was dangerous and rushed to the clinic. Always better to go if you feel it's too much for your body.

Rajesh Sharma Rajesh Sharma Joined Feb 2026 9 months ago

For someone like me managing diabetes, any high fever is a concern because it can affect blood sugar levels significantly. Generally, for adults, anything above 103°F, or a persistent fever with other symptoms like severe weakness or confusion, is dangerous. Always monitor your blood sugar extra carefully and consult your doctor quickly.

Powered by

Consult a internal medicine specialist

Gopal Singh Gopal Singh Joined Mar 2026 7 months ago

High fever, ah, the body's way of telling you it's throwing a full-on party inside without your permission! It gets dangerous when it hits above 103°F in an adult, or if you start seeing stars and can't remember your own name. Basically, when it stops being a 'mild inconvenience' and starts being a 'send help now' situation.

Priya Sharma Priya Sharma Joined Apr 2026 6 months ago

It's like your body's alarm system going off! For adults, if it's over 103°F (39.4°C) and not budging, or if you start feeling like you're starring in a horror movie with chills and aches, that's when you should probably call for backup (aka a doctor). Don't try to be a hero!

Related reads

All articles
Rohan Gupta Rohan Gupta Joined Apr 2026 6 months ago

For adults, a fever above 103°F (39.4°C) is high enough to warrant medical attention. Also, if a lower fever lasts for more than 2-3 days, or if you have severe symptoms like difficulty breathing, confusion, chest pain, or a stiff neck, then it's serious. Don't delay, go to the doctor.

Amit Kumar Amit Kumar Joined Jun 2026 4 months ago

I can only share what I've learned from my own family's experiences. Generally, if an adult's fever goes above 103°F and doesn't respond to medication, or if a child's fever is very high or they seem very unwell, we always call the doctor. Better safe than sorry.

Evidence-based health, reviewed by clinicians. Free, weekly.