It is hard to believe, but various skin rashes, eczema, Stevens Johnson Syndrome can be autoimmune issues and can be a 'birth defect' that shows up after birth when a parent has been poisoned by 2-butoxyethanol (A teragogen chemical)

Of course it is very easy to be exposed today, and exposure looks like flu (Flu is not caused from a virus as is commonly thought, but it is a chemical poisoning to a particular chemical: old name ethylene glycol monobutyl ether)