It is Diab's fifth film as a screenwriter, but his first as a director.
Diab said he was optimistic that attitudes were beginning to change since the revolution.
Diab, 33, is now turning his attention to a new twice-weekly politics show on Egyptian television.
Diab's said he feels his identity split between his Palestinian heritage and his parents' adopted country.
CNN: Syrian pop artist depicts suffering with 'black comedy'
Diab said the banana represents a person suffering from the pain of the nails.
CNN: Syrian pop artist depicts suffering with 'black comedy'
Diab's brother Bassam, himself a former prisoner, said hunger strikes are the only weapons to end the practice of administrative detention.
The Israeli Prison Service (IPS) said it was trying to get Mr Diab and Mr Halahla to eat, and that they were receiving proper medical care.
"Like Charlie Chaplain, I'm representing a black comedy so it makes you smile and it gives you grief at the same time, " Diab said of his work.
CNN: Syrian pop artist depicts suffering with 'black comedy'
Diab visited Dubai for the opening of the Ayyam Gallery a few years ago, but said he has not been able to get a visa to visit since.
CNN: Syrian pop artist depicts suffering with 'black comedy'
Diab and Halahlah will appeal their detention before the Supreme Court in Jerusalem, where they will argue for their freedom because they have not been charged with a crime.
Diab said after the film was first shown in Egypt many women told him they would now report incidents, and police officers said they would take such reports more seriously.
While many patients now seek support through online chat rooms, face-to-face groups have the advantage of "the warmth and closeness that can develop when people interact on a personal level, " says Ruth Diab Lederer, a program manager at the American Brain Tumor Association.
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