Back away from products with benzalkonium chloride

+Practice
In print
Dermatology

Back away from products with benzalkonium chloride

By Caroline Mahon
Granular-Parakeratosis.1.
[Image: Supplied]

Dermatologist Caroline Mahon reviews a scaly skin condition that mainly affects body folds

Key points, The classical presentation of granular parakeratosis is a flexural-predominant symmetrical inflammation associated with dark-brown branny scale. Ski, Pract Green w Pale Yellow
References

1. Northcutt AD, Nelson DM, Tschen JA. Axillary granular parakeratosis. J Am Acad Dermatol 1991;24:541–44.

2. Tian CJ, Purvis D, Cheng HS. Granular parakeratosis secondary to benzalkonium chloride exposure from common household laundry rinse aids. NZ Med J 2021;134(1534):128–42.

3. Sugimoto N, Tada A, Kuroyanagi M, et al. Survey of synthetic disinfectants in grapefruit seed extract and its compounded products. Shokuhin Eiseigaku Zasshi 2008;49(1):56–62.