I have in the past a been  in my nose as well as a spot on my leg many years ago. I believe cently I have acquired this again in my nose and had a big pimple thing in my nose drain yellow pus Then it returned very close to the same spot. I now have a small hole in my nose where the first one was. It seems ago have left a hole. My nine year old son has asthma and eczema his allergies are horrible right now and he just showed me a blister on his shin.....it seems we are contagious. What do you think?
There can be heredity effect but the are not contagious think you are having skin clergy and sinusitis which cause symptompslike you have stated and your child started to have asthma and skin problems, so both are suffering from allergy get diagnosed his allergy from allergy doctor and get Rx for that