Symptom Information: Sort according to HPO 

1
 (HPO:0200044) Porokeratosis 11 / 7739
2
 (OMIM) Small, annular, anhidrotic keratotic lesions located predominantly on sun-exposed areas 1 / 7739
3
 (OMIM) Central atrophic area has a peripheral keratotic ridge 1 / 7739
4
 (OMIM) Column of parakeratotic cells (cornoid lamella) overlying absent granular layer 2 / 7739