Her inability to concentrate could cause an accident.

她无法集中注意力可能会导致意外。

《柯林斯英汉双解大词典》

Anxiety is another cause for the inability to concentrate.

焦虑是另一个无法集中注意力的原因。

youdao

Symptoms before: lack of oxygen to the brain and muscle tissues caused inability to concentrate, muscle weakness, emotional irritability.

以前的症状：大脑和和肌肉组织缺氧导致注意力不集中，肌肉无力，脾气暴躁。

youdao

Sometimes I would be so buzzing with inability to concentrate, that I would blindfold myself.

BBC: News | NEWSNIGHT | Jonathan Franzen interview transcript

It total, 80% of teachers surveyed said they believed poverty had a negative impact on pupils' attainment - with problems including under-achievement, not having a quiet place to study at home, inability to concentrate and lack of access to computers and the internet.

BBC: Poverty hitting pupils' learning, survey suggests