What it could be? ( Health advice)

I'm 20 [M]. 5.9 height and weight is abt 55 KG ( I was 69 a year ago). From the past 1 year I'm suffering from some thing incredulous. Bunch of hairs are coming out. I'm losing my weight so rapidly. I've no diabetes no other medical problems. But often my nose bleeds. I was used to think that it's normal and never discussed it with my parents coz they are so obsessed with me I'm there only son they'll start taking stress and I don't want this situation. But now days nose bleeding is coming frequently. A lot of rashes on my back and they itch all the time they're so irritating. I feel sluggish and dizziness. Stress and depression is another game... I'm fighting a religious Battle with my self and it's so heck and sick... It is ruining my life.. Like it's Ramadan and I hafta pretend I'm fasting when I'm not..... I'm dread and underneath I'm broke.... ... Tell me what it could be... Plz say, it's not what I'm thinking I shall be so grateful... If it's not what I'm thinking...