Use 'spiral up' to describe something increasing quickly, often in a situation that's hard to control.

Rapid Increase

'Spiral up' sometimes implies a negative outcome or an unwelcome situation.

Negative Connotation

The phrase can be used figuratively to describe situations, not only physical quantities.

In aviation, use 'spiral up' to describe aircraft ascending in a helix pattern.

'Spiral up' evokes a clear image of circular upward motion, useful in descriptive contexts.

Use 'spiral up' to describe someone advancing steadily and successfully, often in business or a career.

This phrase often carries a positive tone when talking about personal or professional development.