Seriously everyone does become ill for a variety of reasons. Sometimes it is just short lived other times it is a prolonged illness. Either way once it is known that someone is sick there’s a couple of things to keep in mind.
For starters remember that they are sick. Chances are they are not firing on all cylinders and not every thought is going to be rational. A little extra time is sometimes going to be needed to convey a message completely and instructions may need to be repeated or re-explained.
Second, don’t expect them to be their normal cheerful selves, assuming they had a sunny disposition to begin with. Again, the person is sick so maintaining an upbeat attitude is not a priority. If you are nice to them chances are that positive energy will help perk them a little as well.
Finally, once you identify the person is sick the next words out of your mouth should be “Is there anything I can do to help?”. If they say yes and explain what is needed and it is within your power to accomplish that, by all means do so. However, if they say no and wish to be left alone do exactly that. Unless there is need for immediate medical attention who cares. Sometimes they just need a minute sometimes they need to sleep it off.
These are just some general guidelines and will not suit every situation. Again please bear in mind that when dealing with someone that is sick ranging from the sniffles to a life altering illness to give it a little extra effort.