Three individuals representing three successive generations of one family are presented demonstrating pachyonychia congenita involving multiple nails of hands and feet, epidermal cysts, callosities of feet with blistering, hyperhidrosis, unusual hair texture, and erupted teeth at birth.
Soderquist NA, Reed WB. Pachyonychia Congenita With Epidermal Cysts and Other Congenital Dyskeratoses. Arch Dermatol. 1968;97(1):31-33. doi:10.1001/archderm.1968.01610070037005