Photodynamic Therapy — Flashcards

Flashcard 1: What is the main disadvantage of cryotherapy (cryoneurolysis)?

Answer: Post-procedure neuralgia (Neuritis)

Extra: Cryoneurolysis (cryotherapy in pain management) involves the application of extreme cold (-60°C to -100°C) to achieve a reversible nerve block. While it avoids the risk of permanent neuroma (unlike phenol/alcohol), the main disadvantage is the potential for post-procedure neuralgia or neuritis, occurring in about 5-10% of cases.

Flashcard 2: Medium chemical peel leads to necrosis of the skin upto the level of the _____

Answer: papillary dermis (incl. epidermis)

Flashcard 3: 4-10 coats of Jessner's solution or TCA (10-30%) is an example of _____ chemical peel

Answer: Superficial (epidermal)

Flashcard 4: _____ lines are relaxed tension lines in the skin.

Answer: Kraissl's

Flashcard 5: TCA is combined with another agent like Jessner's solution or glycolic acid as it can lead to _____ when used alone

Answer: scarring/dyspigmentation

Flashcard 6: Phenol 88% is an example of _____ chemical peel

Answer: Deep (reticular dermal)

Flashcard 7: Indications of _____ depth chemical peels include actinic keratoses, pigmentary dyschromias, and superficial scars.

Answer: medium

Flashcard 8: 4 methods of removal of a tattoo?_____ to scarification with sandpaper and from caustic soda to electrolysis.

Answer: Surgical excision

Flashcard 9: What is the most frequently employed agent in hospital practice for cryotherapy?_____

Answer: Liquid Nitrogen

Flashcard 10: Do steroids and immunosuppressants need to be stopped before performing the patch test?_____

Answer: Yes