This is the 10628th most frequent Spanish word.
cutánea
Relating to the skin.
In this sentence, 'cutánea' is used as an adjective describing 'reacción', indicating that the reaction pertains to the skin.
La reacción cutánea al nuevo jabón fue inmediata.
The skin reaction to the new soap was immediate.
Here, 'cutánea' modifies 'biopsia', specifying that the biopsy targets the skin.
Realizaron una biopsia cutánea para analizar la lesión.
A skin biopsy was performed to analyze the lesion.
In this case, 'cutáneo' functions as an adjective describing 'tratamiento', specifying that the treatment is related to the skin.