Ahhh. I was wondering about something the past few days, and here comes the answer.
I adjusted swiftly to my restrictions, including keeping PEM as small as possible (well...). One could call this "sickness behavior". I often see how people look. Sometimes they seem aghast or embarrassed. (Please note I am not severe, and I look healthy.) Authorities called it "aggravational and demonstrative behavior". Since people's and authorities' reactions cause unpleasant feelings in myself, I was earnestly considering to play the healthy role - at my expense of course. After a second thought I decided it's not worth jeopardizing my health further due to people who can't bear to see sickness.
I think maybe that's one problem: Today, most people don't want to see unpleasant things. Maybe like Prince Sidharta's father who wanted to protect his child from any suffering (which can't work). It seems that sick people should not show their sickness because it reminds the others of suffering - which is an unpleasant feeling and therefore unwelcome. À la "If we have to pay you, grrr - could you please not be a pain in the ass otherwise?"