<prompt> Bamboo hair is seen in:Trichorrhexis nodosaNetherton syndromeKinky hair syndromeUncombable hair syndrome  <response>: Ans. b. Netherton syndromeNetherton syndromeFragile hairs with bamboo-like nodes are seen in Netherton syndrome.Ichthyosis linearis circumflexa ILC, bamboo hairs Trichorrhexis invaginata and erythematous scaly dermatitis are the features of Netherton syndrome.Option a: Trichorrhexis nodosa: It is a defect in the hair shaft characterized by thickening or weak points nodes that cause the hair to break off easily.Option c: Kinky hair syndromeIt is also known as Menkes disease, an X-linked recessive disorder in which copper deficiency leads to neurodegeneration, kinky hair, and connective tissue abnormalities.Pili torti also known as Twisted hairs is the characteristic phenotype seen in Menkes disease.Option d: Uncombable hair syndromeIt is also known as Spun-glass hair.Triangular cross-section of Hair and canalicular depression or gutter along one side are characteristically observed which contributes to its hair stiffness. 