They don't: A number of chemotherapy drugs and radiation to the head can make hair fall. Some patients cut it short before that happens to avoid a mess of falling hair on their bed and clothes but they do not have to. Would not advise shaving it, though.
Answered 12/10/2013
4.9k views
Hair loss: Having clumps of hair fall out due to chemotherapy or radiation can be genuinely upsetting. It can also leave bald patches. Some people shave their heads to avoid going through that. Some may wear wigs over their balding or shaved head.
Answered 1/30/2021
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