I have been dealing with this for a long time.
My parents do not consider this as a real sickness, but is real. no matter how many tea, or strange things they make me drink for make me feel better. Inevitable in some point of my day/week/month, I feel worthless and useless. Like someone who doesn't deserve love and a mess in general.
I pretend to be fine and make that thing doesn't exist, but sometimes is obvius that I'm not ok. Especially when I'm with my boyfriend.

Of course it is a serius business stuff, but you know. If is not that obvius like a flu or a broken arm or anything like that, people won't consider it like a real sickness. Despite does exist people who has committed suicide due to this, but again, the majority think like my parents: "they are just "weak mind" people".