Cobalt is a metal which is commonly used as a binding metal in jewellery and household objects like cutlery.
Cobalt allergy has also been noted after transplantation surgery, mostly associated with hip and knee replacements and in dental procedures.
Cobalt can also be found in cosmetics, hair dyes and inks.
It is a metallic element and important constituent of vitamin B12, so it may also often be found in B12 supplements.
Cobalt allergy is associated with allergic contact dermatitis.
Cross reactivity to chrome
and nickel is commonly seen in patients who are allergic to cobalt.
DermNet NZ - Cobalt Allergy
Science Direct - Cobalt
Allergy to Vitamin B12
Cobalt Allergy, what is it?
Cobalt - Dermatitis Academy
Articles and Journals
Chromium and cobalt release from metallic earrings from the Danish market, 2021
Experimental evaluation of nickel and cobalt release from tools and self-reported prevalence of nickel and cobalt allergy in the German hairdressing trade, 2020
Metal allergy in total-joint arthroplasty, 2018
Association between cobalt allergy and dermatitis caused by leather articles – a questionnaire study, 2014
Metal Allergy and Systemic Contact Dermatitis: An Overview, 2012
Prevalence of nickel and cobalt allergy among female patients with dermatitis before and after Danish government regulation: A 23-year retrospective study, 2009
The impact of various patient factors on contact allergy to nickel, cobalt, and chromate, 2006
Let me know if you found any of these interesting or useful.
If you spot an article or research that you think is interesting you can message me or tag me on Facebook or Twitter - links at the bottom of the page.