Non-pigmenting fixed reactions is caused by:: (A) Sulphonamides, (B) Ampicillin, (C) Pseudoephedrine, (D) Carbamazepine
Answer is C. Non-pigmenting fixed reactions have been repoed with sympathomimetic agents pseudoephedrine, tetryzoline hydrochloride, difunisal, thiopental (thiopentone), piroxicam, Radiopaque contrast medium iothalamate, arsphenamine paracetamol. Ref: Rook's textbook of dermatology, 8th edition, Pg 75.48.