In the years I’ve been writing, I cannot say I have experienced a full blown case of writer’s block, although what has not skipped my sci-fi encrusted brain is what I call the “slow motion syndrome.”
With “slow motion syndrome,” writing a paragraph will go something like this. In the first sentence there are no problems and you breeze right through.
With the second sentence, there is a definite pause and you must think before adding the last few words.
In the third sentence, you complete half and slowly finish the sentence one-word-at-a-time.
I guess one is just about as bad as the other, of course with S.M.S. you can see some progress, even if it is minuscule.