EXHIBIT 24 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Rodney A. Young and Deborah L. Moore, and each of them, his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities (including his or her capacity as a director and/or officer of LecTec Corporation), to sign a registration statement, and any or all amendments (including post-effective amendments) thereto, on Form S-8 for the sale of shares of LecTec Corporation Common Stock pursuant to the LecTec Corporation 1998 Stock Option Plan and the LecTec Corporation 1998 Directors' Stock Option Plan, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them, or their or his substitutes, may lawfully do or cause to be done by virtue hereof. Name Title Date ---- ----- ---- /s/ Rodney A. Young Chief Executive Officer, President February 18, 1999 - ------------------------ and Chairman (Principal Executive Rodney A. Young Officer) /s/ Deborah L. Moore Chief Financial Officer (Principal February 18, 1999 - ------------------------ Financial and Accounting Officer) Deborah L. Moore /s/ Lee M. Berlin Director February 18, 1999 - ------------------------ Lee M. Berlin /s/ Alan C. Hymes Director February 18, 1999 - ------------------------ Alan C. Hymes, M.D. /s/ Paul O. Johnson Director February 18, 1999 - ------------------------ Paul O. Johnson /s/ Bert J. McKasy Director February 18, 1999 - ------------------------ Bert J. McKasy /s/ Marilyn K. Speedie Director February 18, 1999 - ------------------------ Marilyn K. Speedie /s/ Donald C. Wegmiller Director February 18, 1999 - ------------------------ Donald C. Wegmiller