We have completed maintenance on DiscoverMagazine.com and action may be required on your account. Learn More

NCBI ROFL: When you're allergic to your toilet seat.

Discoblog
By ncbi rofl
Feb 7, 2013 2:00 AMNov 19, 2019 9:18 PM

Newsletter

Sign up for our email newsletter for the latest science news
 

"We report a case series of 5 patients who were found to have an allergic contact dermatitis (ACD) to their wooden toilet seats. The patients presented to our contact dermatitis clinic during a 5-year period from 2005 until 2010. In each case, there was a regional eczematous eruption localized to the buttocks and posterior upper thighs with an annular configuration that matched to the shape of the patients’ toilet seats ... ...Microscopic examination of a toilet seat sample from one of the patients confirmed not to react to the surface varnish was undertaken. The wood had distinct growth rings and was diffuse porous, with abundant small vessels in radial multiples, small mainly opposite intervessel pitting, scalariform perforation plates with 14 to 23 bars, and uniseriate homocellular rays between 4 and 35 cells high. These characters indicated that the wood was Alnus species, alder, and reference microscope slides were a good anatomical match. This type of wooden toilet seat is available for purchase. Alnus glutinosa has been found to cause dermatitis of the face and hands in several reports, probably due to wood rather than bark exposure.2 Analysis of the remaining wooden toilet seats in our case series was not performed; these were described as pine in 2 cases, mahogany medium-density fiberboard in 1 case, and unknown in the other."

A bum deal from wooden toilet seats: reemergence of allergic contact dermatitis.

Photo: flickr/ macaron*macaron(Est Bleu2007)

Related content: Discoblog: NCBI ROFL: The collapse of toilets in Glasgow

Discoblog: NCBI ROFL: Do women with urinary incontinence really know where all the toilets are? The toilet paper.

Discoblog: NCBI ROFL: What do Jews do while they poo?

NCBI ROFL. Real articles. Funny subjects. Read our FAQ

!

1 free article left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

1 free articleSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!

Subscribe

Already a subscriber?

Register or Log In

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
Subscribe
To The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Copyright © 2024 Kalmbach Media Co.