How 2 not take it personally when someone thinks i overexaggerate when i say i have to go home & sleep after work (lupus/dysautomia) or if i have 2 call in sick d/t pleurisy?this irritates me 2 no end

Overexaggerate?: I'm not sure who this "someone" is, but unless s/he is your supervisor or boss you really owe no explanation. Also, you cannot control what someone else thinks. If this is someone whose opinion you value you can have a discussion with him/her about the facts -- knowing that this may not change his/her opinion. You can also find more fulfilling things to do than worry about others' unkind comments.

Healthy no empathy: If you are healthy it's difficult to understand &/or empathize with people who are ill--eventually we all get something.