i always tell. because i want those multiple sick days explained and because i like being honest. i always make an emphasis that i do not seek special treatment - i oppose it and i wish to be under the same demands as my healthy co-workers. that's usually what happens.i do not write it in my resume, but it all works out very well - here in israel, everybody do army servise. because of my cf, i didn't. here, in your resume you include what you did in the army. in my resume, there's not a word about army. so when i'm interviewed, face-to-face, the employer asks about army servise, i tell them about cf. at that point, they already see me, see that i'm looking normal and talking normal and everything's good, and they see a person with a disease, not a disease behind which there's a person. it even works out to my benefit, because usually they ask me how do i cope with work and taking care of cf, and i have an opportunity to tell them about how cf had taught me to be determined, hard working and strive to achieve as many goals as possible. somehow, they see that if i can deal with this disease successfully, i'd make a good worker. and i haven't faced any discrimination because of cf. of course, i'm in a different country, i dont know how things are in usa.