I think something happens to me literally everyday where I have to deal with some kind of swelling on my body. Maybe it has something to do with my immune system, I'm not sure. I have learned how to cope with it though, these are the home remedies I use for swelling.
When I have an insect bite, the area becomes red, swollen and itchy in a matter of minutes. First thing I do is wash with soapy water. I usually apply insect bite sprays but sometimes I don't always have one. In that case, I apply some rubbing alcohol on it. If I don't have that, then I apply vinegar. This relieves the itch and the swelling goes down.
Once I was eating melon, went to the bathroom and saw that my lips became huge! I had eaten melons many times before and couldn't have seen that coming. The same thing happens to me when I have hot pepper so I knew what to do. First I apply ice cubes wrapped in cloth (I was taught never to apply ice directly on skin). Then I apply aloe vera gel. It works great. I actually use aloe vera gel for insect bites sometimes too. I keep my bottle of aloe vera in the fridge, I feel it works better when it's cool.
The final remedy I want to mention is for swollen eyes. I have this when I sleep too much or too little, when I walk outside when there is pollen and when I cry. Using eye drops and applying tea bags are good for this kind of swelling. Following up with sliced cucumber is great too.