Warts seborrheic

Four cases of hyperkeratotic seborrheic warts appearing over a 2-year period, 25 years after the patients had been started on azathioprine 2.5 mg/kg, have been reported (58). 

Areas of hyperkeratosis (senile keratoses, and flat and seborrheic warts) are a perfect example of this difference in the level of penetration. Keratoses, which are characterized by a localized thickening of the stratum corneum, are less permeable to the acids. Pre-peel preparation with tretinoin evens out the thickness of the stratum corneum and hence the overall permeability of the epidermis. 

DCA is used as a cauterizing agent in the treatment of all types of warts, calluses, corns, xanthelasma, seborrheic keratoses, ingrown toenails, etc. It is just as effective as other methods such as electrodessication or dry ice. 

Seborrheic keratoses and flat warts do not respond well to OT. They can be treated with shave excision followed by a single application of ETCA. 

Types of papillomata were separated by Hodgson and Whitely into four morphologic groups (1) flat shiny lesions (2) sessile lesions resembling plantar warts (3) pedunculated skin tags (fibro-epithelial polyps) and (4) plaques (seborrheic keratoses). 

This chapter will review the use of AHA peels—in particular, glycolic acid peels [GAP)—in the treatment of the signs of photoaging, acne, melasma, lentigines and seborrheic keratosis, keratosis pilaris, and warts. Furthermore, GAP can be used in combination with fluorouracil to treat pre skin cancer conditions, such as actinic keratosis and actinic cheilitis. 

Glycolic acid peels are used as adjunctive treatments in conditions such as acne, postinflammatory hyperpigmentation usually resulting from acne, shallow acne scars, papulopustular rosacea, melasma, seborrheic and actinic keratoses, keratosis pilaris, and some warts resistant to conventional treatments. 

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