But structural heart problems often go undiagnosed because the tests needed to find them can be expensive.

He suffers from clinical depression which went undiagnosed until his mid-30s.

HS often goes undiagnosed for years because patients are too ashamed to speak with anyone.

Depression is not a normal part of aging, and yet it often goes undiagnosed.

Too many kids have gone undiagnosed for two to three years, when early diagnosis and intervention are so important.

Thus, blood pressures above normal can go undiagnosed for a long period of time.

As a result, the illness can go undiagnosed for some time.

But studies show that the vast majority of cases go undiagnosed.

They also discovered 22 women who had cancer that otherwise might have gone undiagnosed.

The true mortality rate is thought to be much lower because most cases are so mild they go undiagnosed.