#keratosis__keratosi  a skin condition marked by an overgrowth of layers of horny skin
  supertype:  skin_disease__disease_of_the_skin__skin_disorder__skin_problem__skin_condition  a disease affecting the skin
  subtype:  actinic_keratosis__actinickeratosi  an overgrowth of skin layers resulting from extended exposure to the sun
  subtype:  keratosis_blennorrhagica__keratosisblennorrhagica__keratoderma_blennorrhagica__keratodermablennorrhagica  skin disease characterized by a scaly rash on the palms and soles; associated with Reiter's syndrome
  subtype:  keratosis_follicularis__Darier's_disease  a rare hereditary condition marked by dark crusted patches (sometimes containing pus)
  subtype:  keratosis_pilaris__keratosispilari  keratosis characterized by hard conical elevations in the openings of sebaceous glands (especially of arms and thighs)
  subtype:  seborrheic_keratosis  a skin condition characterized by circumscribed wartlike lesions that can be itchy and covered with a greasy crust

No statement uses or specializes keratosis; click here to add one.