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

1.
alopecia, calvície
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.
Ela foi diagnosticada com alopecia, o que fez com que seu cabelo caísse em tufos.
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There are various types of alopecia, each with different causes and treatments.
Existem vários tipos de alopecia, cada um com diferentes causas e tratamentos.