Abstract:
Background: The carbon dioxide laser became available i;{~~and ~~)
became the most widely used laser in dermatologic practice. The carbon
dioxide .Iaser emits an invisible infrared beam at a 10,600-nm wavelength,
targeting both intracellular and extracellular water. When light energy is
absorbed by water-containing tissue, skin vaporization occurs with production
of coagulative necrosis in the remaining dermis
Objective: To study the outcome of the treatment of dermatosis papulosa
nigra with 10600 nm C02 Laser
Methods and Methodology: This is a prospective, clinical descriptive,
intervention study. The study was performed during Apr - Aug 2014, and
involved ten patients. The study aimed to treat derrnatosis papulosa nigra with
the 10600 nm C02 laser. The C02 laser parameters used were the standard
mode·{C.W), using the non-contact application of focusing hand-piece with a
power of 4 Watt. Data had been collected by using questionnaire which
designed, and filled for ten patients. The data was inserted in spread sheets.
Ten undesired effects were considered as elements for the evaluation of the treatment response.
Results: The duration of the lesions ranged between 5 to 20 years. The face
was affected in all patients in this study. Seven patients had papules only, and
two had papules and nodules. All the patients presented with either grade II
(70%) or grade III (3 0% ). Each patient need one session. Excellent response
was achieved in eight patients, none of the patients showed poor or bad response. ..............
