I was told i have chronic telogen effluvium. Will it ever stop and i will get my hair back?

I lost 50% of my hair brows and lashes due to cte. I also have prickling and itching of scalp which no anti dandruff shampoo can help. It feels like it comes from within. I have had a biopsy and every blood test imagineable, but all is normal, iron is very good also. How long will this go on for??  I cannot live with this disease anymore. This started at 39 after getting off bcp that i took for 4 month, i cant suffer anymore. Please help!