Pallister–Killian syndrome (PKS) is a rare sporadic disordercaused by mosaicism in tetrasomy of isochromosome of chromosome12p (Pallister et al. 1977; Teschler-Nicola and Killian1981). PKS is characterized by coarse facies with a prominentforehead, sparse frontotemporal hair, hypotonia, seizures,intellectual disability and anomalies like diaphragmatic hernia,cleft palate and polydactyly (‘Pallister Killian Syndrome,’ n.d.).Streaky hypopigmentation or hyperpigmentation is a clue to themosaicism of chromosomal abnormality.