As adjectives the difference between epicutaneous and transdermal
is that epicutaneous
is (medicine) describing the application of a drug etc directly onto the surface of the skin while transdermal
is through the unbroken skin.
As a noun transdermal is
a transdermal patch or implant.
(medicine) Describing the application of a drug etc. directly onto the surface of the skin
Through the unbroken skin.
* transdermal implant
* transdermal patch
A transdermal patch or implant.