urticaria pigmentosa
noun
urticaria pig·men·to·sa
-ˌpig-mən-ˈtō-sə, -(ˌ)men-, -zə 
: a skin disorder usually occurring in children that is caused by the proliferation of mast cells and is marked by small, itchy, reddish-brown spots or bumps on the skin
Urticaria pigmentosa is associated with indolent systemic mastocytosis in more than 80% of all cases; scratching of these reddish brown macules, which are scattered over the body except for the palms, soles, and scalp, triggers urtication and erythema …—
Mandakolathur R. Murali et al., The New England Journal of Medicine
—abbreviation UP
Mandakolathur R. Murali et al., The New England Journal of MedicineDictionary Entries Near urticaria pigmentosa
Cite this Entry
“Urticaria pigmentosa.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/urticaria%20pigmentosa. Accessed 23 Nov. 2024.
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