Being diagnosed with a symptom.

I don’t know if I’ve posted about this before, it wouldn’t surprise me if I had and have forgotten about it… But I’m really, REALLY angry about it, and I just don’t seem to be able to get past it. Long story short, I’m second in charge at work. I’m also the newest permanent staff member, which means my files are at the front of the book. I busted one of the older women (53) going through my file. She claimed she was looking for a form and couldn’t find it. It’s important to note at this stage that I’ve listed CFS under “relevant medical conditions” because frankly it explains why I’m occasionally found in the kitchen with a coffee cup in hand with absolutely no idea why I’m in there. This women had never mentioned any major health issues, had never mentioned anything being wrong.  This is a woman who will complain for a full hour about how sore her shoulders get after swiming 20 laps. This is a woman who has informed the entire staff in graphic, horrible detail about what happens when she eats to much cheese. She's NEVER mentioned any health issues... Then the  next day she goes off sick for 2 weeks. She comes back with a letter from her Doctor (who just so happens to be her brother in law) saying she’s got “Chronic Fatigue,” and as such she couldn’t be expected to give notice when she intended to take sick leave (like anyone can predict sick leave…) and that she needed a reduction in duties at work. (Note it said “Chronic Fatigue,” and not “Chronic Fatigue Syndrome."  As in the symptom. Not the actual illness.) Since then, whenever I’ve been getting really run down, and wanting to take a day or two off to try and prevent a massive relapse, she gets in first and takes a week off. It's like clockwork, someone will mention I look really sick, and she'll take a sick day or five.   Every time she’s asked to do an extra shift, it’s “Oh I would, but I have a doctors appointment.” I asked her to stay back 10 minutes and wait for a delivery because I had a doctors appointment, and she said no because she had one.   I asked her to do the closing shift, and LIED to my face and said that she’d talked to my boss and HE said she could do the opening one, because *dramatic cough* she has a doctors appointment. When I queried this with my boss, he hadn’t even talked to her about it. He also reminded me that I was in charge of the roster, and that I could put her on when ever I liked. He then advised me to take into account that not giving her the shift she wants will likely lead to her taking the rest of the week off. Then she’ll have a nice little chat about how she’s going skiing on the weekend. Or spending the day touring wineries on foot. Then she’ll ask me what I’m doing on the weekend, and I say “not much,” because “being unable to get out of bed,” is just a depressing answer. Then she just gives me this pitying look, and says “But you’re so young! If I can get out and do things, you can!” I’m sorry but no. Just no. You don’t get diagnosed with A SYMPTOM of an illness and then ruin my working life with it. I don’t claim to have skin cancer just because I get a zit and all skin bumps MUST be the same. I don’t claim to have chicken pox when I get a mosquito bite because one itchy bump is the same as any other.   I’m going to get myself fired for going off my head at her at this rate.