Hello sir I want to share an incident happened with me few months ago Out of nowhere I got fever of 101-102°f I tried dolo 650 mg but my fever never goes below 99° So after 2 days we thought to see for a doctor he suggest me some paracitamol tablets some antibiotics and an injection of monosef I was sitting in sofa while taking injection (IV) And when our medical helper start injecting medicine in my veins within seconds my vision got completely black, I completely lost sight and hearing capability, I wasn't able to hear my parents voice clearly but I was able to speak And my ears and face also started getting very hot, then I lie down and after few minutes I started getting normal again Now my question is I have taken this injection many times in past but this was the first time I experienced something like this So I wanna ask is it normal or did my medical staff did something wrong or is it a sign of something else, and is there any precautions which I should be looking for.