Why is my hair falling out when i wash it? 5y cancer free history of neuroblastoma, ptsd, depression

Get some help: Hair loss can be due to many different causes such as hormonal problems, endocrine diseases, skin conditions, auto-immune conditions, and drugs, for example. You should see your doctor about this.

I don't know why.: Dr stuart gave a great answer. In addition to those medical causes, stress associated with ptsd or depression could also be a factor. Here is a short article by the mayo clinic on impact of stress with hair loss: http://www.Mayoclinic.Com/health/stress-and-hair-loss/an01442. I agree that this would require medical work up. Take care.