FTU is a measure of:
An approximate practical measure of topical medication is the fingeip unit, the quantity of ointment, extruded from a tube with a nozzle of 5 mm diameter extending from the distal crease of the forefinger to ventral aspect of the fingeip. This unit weighs approximately 0.49 g in males and 0.43 g in females and covers, on average, an area of approx 300 cm2.
Area involved in severe drug reactions
Amount of topical drug to be applied
Mucosal involvement in pemphigus
Concentration of drug in topical preparations