Dermatitis and Eczema Skin

My young wee lad Jared gets this horrible nasty skin condition eczema.dermatitis. It pains me every time he is crying because (using his words) his nuts are sore and he can't sleep. And coming into winter I know it is just going to get worse.

Asthma my new project

Okay so my new project is do write a guide for asthma, but then I got to thinking this is too broad and that's when I realised that this one project is going to have at the very least two guides one for adults and then a story type one for children or maybe a non-fiction guide for children. I don't know at this stage. That's why one does a Project Specification Plan because it tells you exactly WHAT you are going to write and WHO you are going to write for (target audience). I know one thing I want to know more about asthma so that I can help my son and myself.
At this stage without giving it a whole lot of thought I want to know:
What causes asthma?
What are the triggers?
What treatments and when to take them?
Related illnesses
Are there different types of asthma?
Who is affected?
Is it hereditary?