Writer's block is a situation whereby as a writer you are unable to think of anything new to write about, you go totally blank on ideas. Although this is a common thing that happens to writers, a lot of them freak out and lose it all completely. If the case of writers block isn't handled carefully, it could lead to a total loss of confidence in a person belief in his capabilities to write which could make he/she stop writing.
There is no possible cause of the writers block but a few solutions could help to overcome it