A question for the medical professionals: How does one recognise symptoms of low blood sugar in someone else? Is there a progression of symptoms towards more severe that a bystander is able to recognise? How long does it usually take until the real life-threatening stuff sets in? Is there a distinctive symptom? I've researched, but all the websites I've found go into detail for recognising the symptoms in one's self. I am asking for a bystander... Thanks a bunch in advance!