Radhika Madan was supposed to make her movie debut through Mard Ko Dard Nahin Hota (2018), but due to a delay in it's release, Pataakha (2018) turned out to be her official debut movie.
Writer-director Vasan Bala was inspired by a kid at a dentist's clinic.
Surya's stepmom's name is same as that of Diane Kruger's character name in Inglorious Bastards. (Bridget von Hammersmark)
Mard ko dard nhi hota title taken from a dialogue of Amitabh Bachhan starrer film "Mard".