Writer-director Vasan Bala was inspired by a kid at a dentist's clinic.
Mard ko dard nhi hota title taken from a dialogue of Amitabh Bachhan starrer film "Mard".
Radhika Madan was supposed to make her movie debut through The Man Who Feels No Pain (2018), but due to a delay in it's release, Pataakha (2018) turned out to be her official debut movie.
Surya's stepmom's name is same as that of Diane Kruger's character name in Inglorious Bastards. (Bridget von Hammersmark)