alopecia
US /ˌæl.oʊˈpiː.ʃə/
UK /ˌæl.oʊˈpiː.ʃə/

1.
alopecia, calvicie
the partial or complete absence of hair from areas of the body where it normally grows; baldness.
:
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She was diagnosed with alopecia, which caused her hair to fall out in patches.
Le diagnosticaron alopecia, lo que le provocó la caída del cabello en parches.
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There are various types of alopecia, each with different causes and treatments.
Existen varios tipos de alopecia, cada uno con diferentes causas y tratamientos.