“…To the current authors’ knowledge, all the reported cases (Luo et al, 2016; Sakai et al, 2006) including the present were from Asia, and the causative agents were beard hairs, suggesting that larger diameter with circular geometry, harder and straighter hairs of Asian play important roles for the hairs growing and extending beneath the skin (Franbourg, Hallegot, Baltenneck, Toutain, & Leroy, 2003; Luo, Liu, Huang, He, & Zhang, 2009; Luo, Zhao, & Liu, 2010; Luo et al, 2016). As both “ingrown hair” (Panchaprateep, Tanus & Tosti, 2015; Sakai et al, 2006) and “ingrowing hair” (Luo et al, 2016) are the terms that have been used to describe the disease of hairs growing inside the skin, and both can easily cause confusion, the present authors suggest that “intradermal growing hair (IGH)” may be a more appropriate term to describe the present entity. As the authors’ team met three cases within 3 years, the authors considered that IGH may have been largely underestimated, misdiagnosed, or neglected as a diagnosis in China before.…”