3 doctors weighed in:
Once you have started chemo, does your hair fall out right away or later?
3 doctors weighed in

Dr. Michael Fisher
Dermatology
2 doctors agree
In brief: Anlagen Effluvium
The onset of anagen effluvium is very rapid.
Some individuals who start taking anti-cancer drugs can literally pull their hair out in clumps within the first two weeks. Because these drugs act so quickly and are so potent, the hair follicles have no time to enter into a telogen resting state, as with telogen effluvium, a response to a more moderate environmental challenge.

In brief: Anlagen Effluvium
The onset of anagen effluvium is very rapid.
Some individuals who start taking anti-cancer drugs can literally pull their hair out in clumps within the first two weeks. Because these drugs act so quickly and are so potent, the hair follicles have no time to enter into a telogen resting state, as with telogen effluvium, a response to a more moderate environmental challenge.
Dr. Michael Fisher
Dr. Michael Fisher
Thank
Get help from a real doctor now
Dr. Adam Smith
Board Certified, Internal Medicine
13 years in practice
382K people helped
Continue
108,000 doctors available
Read more answers from doctors