8-K

                                    FORM 8-K

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported): December 27, 2004

                           DUSA PHARMACEUTICALS, INC.
             (Exact name of registrant as specified in its charter)


  New Jersey                       0-19777                     22-3103129
(State or other                  (Commission                 (IRS Employer
jurisdiction of                  File Number)                Identification
 incorporation)                    Number)

                           DUSA Pharmaceuticals, Inc.
                                 25 Upton Drive
                         Wilmington, Massachusetts 01887
          (Address of principal executive offices, including ZIP code)

                                 (978) 657-7500
              (Registrant's telephone number, including area code)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ]  Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Securities Act (17
     CFR 240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14a-12(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))


Item 8.01.  Other Events.

DUSA Pharmaceuticals, Inc. ("DUSA") issued a press release today attached to and
made a part of this report which announced that it had filed a lawsuit against
New England Compounding Center ("NECC") of Framingham, Massachusetts alleging
violations of U.S. patent law. The suit has been filed in the United States
District Court in Boston, Massachusetts.

In addition, DUSA believes that certain actions of NECC go beyond the activities
which are permitted under the Food, Drug and Cosmetic Act, and as a result, it
has advised the U.S. Food and Drug Administration (FDA) and local health
authorities of its concerns.

Except for historical information, this report contains certain forward-looking
statements that involve known and unknown risk and uncertainties, which may
cause actual results to differ materially from any future results, performance
or achievements expressed or implied by the statements made. These
forward-looking statements relate to the Company's belief regarding NECC
activities and its intention to protect its product's reputation and other risks
identified in DUSA's SEC filings from time to time.


Item 9.01.  Financial Statements and Exhibits.

(c) Exhibits

[99] Press Release dated December 27, 2004.


                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                      DUSA PHARMACEUTICALS, INC.



Dated: December 27, 2004              By:  /s/ D. Geoffrey Shulman
                                           -------------------------------------
                                           D. Geoffrey Shulman, MD, FRCPC
                                           President and Chief Executive Officer


                                  EXHIBIT INDEX
No.       Description
- ---       ------------
99        Press Release dated December 27, 2004

EX-99

                                                                      Exhibit 99

D U S A(R)
INNOVATION IN PHOTODYNAMIC THERAPY

DUSA Pharmaceuticals, Inc.(R)

                         DUSA PHARMACEUTICALS FILES SUIT
                          AGAINST COMPOUNDING PHARMACY

Wilmington, MA. December 27, 2004 - DUSA Pharmaceuticals, Inc. (NASDAQ NMS:
DUSA) reported today that it has filed a lawsuit against New England Compounding
Center (NECC) of Framingham, Massachusetts alleging violations of U.S. patent
law. The suit has been filed in the United States District Court in Boston,
Massachusetts.

In addition, DUSA believes that certain actions of NECC go beyond the activities
which are permitted under the Food, Drug and Cosmetic Act, and as a result, it
has advised the U.S. Food and Drug Administration (FDA) and local health
authorities of its concerns.

Dr. Geoffrey Shulman, DUSA's President and CEO, stated, "We have taken this
action to protect our proprietary intellectual property position from pharmacies
such as the NECC that are promoting and selling ALA of unknown quality from
unknown sources. In addition, we intend to protect against damage to our
product's reputation that might arise from the use of what could be an unsafe
copy of our products. The recent serious incidents involving the use of non-FDA
approved botulinum toxin illustrate how important it is to be proactive in this
regard."

DUSA Pharmaceuticals, Inc. is a biopharmaceutical company engaged primarily in
the development of Levulan Photodynamic Therapy (PDT) and Photodetection (PD)
for multiple medical indications, with its primary focus in dermatology. PDT and
PD utilize light-activated compounds such as Levulan to induce a therapeutic or
detection effect. The Company maintains offices in Wilmington, MA, Valhalla, NY,
and Toronto, Ontario.

Except for historical information, this news release contains certain
forward-looking statements that involve known and unknown risk and
uncertainties, which may cause actual results to differ materially from any
future results, performance or achievements expressed or implied by the
statements made. These forward-looking statements relate to the Company's belief
regarding NECC activities and its intention to protect its product's reputation
and other risks identified in DUSA's SEC filings from time to time.

For further information contact:
D. Geoffrey Shulman, MD, President and CEO
or Shari Lovell, Director, Shareholder Services
Tel: 416.363.5059 Fax 416.363.6602
or visit www.dusapharma.com