I’ve been ‘lazy’ here, but still got 100s in the pipeline… so ask… 
In the meantime I’ve realized today that invisibility is a core “symptom” of fibro and these memes are “treatments”, so I’m putting them at the top of my online symptom & treatment lists (0.), even above pain (1.). Oh: As lack of understanding also may be a additional trigger, for a vicious circle, I’ll put it on “causes/triggers” too.
(It’d got mentions at the beginning, but not clearly enough.)
I’ve also changed this thread title so it reads “visualize … (the) … invisible”
Thinking about the term “invisible chronic sicknesses”, I realized that chronicity is another, and complexity (/polysymptomatic) also (via a quote on wordhippo when I looked up chronic as a noun there) as core symptoms.)…
What I’ve added there for the moment as “treatment” is the short form of this:
On the emotional level I try some of the memes/pix, e.g. on threads here or elsewhere (<pics & memes visualize fibromyalgia>, ), clear descriptions (flu, rhino/train, tin man, our drama of “sick etc. on good days, sicker on the others”), if I were a woman, I’d ask if I’m being discriminated as a woman (‘drama queen’/‘overdramatizing’/‘hysterical’) and point out that many men have it too (recent research reflected on wikipedia says 2:1), take my partner with me to a knowledgeable doc.
On the insight level: learn to describe my symptoms clearly, educate myself (books, videos, online resources) to educate all others (docs, partners, friends, bosses, colleagues, acquaintances), brochures & similar summaries…