onychia of nail macro-onychia

onychia of nail macro-onychia abnormally large or conjoined nails, characteristic of total syndactyly, e.g. Apert's syndrome
  • micro-onychia abnormally small nails, e.g. scleroderma

  • trachyonychia; twenty-nail dystrophy excessive ridging and roughness of all nail plates with dorsal flattening or convexity, associated with lichen planus, psoriasis and alopecia areata