how to have condition start of field, look for carriage return (new line)

I have text being posted from an external database into a field.  This text field has been set to HTML settings as sometimes line breaks are included with the content; however, I want to also check if the field begins with a carriage return, and if so, to not show this field.  Can this be done?

Please provide us specific details of the form id and the field on which you want to perform the operation.