The diagnosis of Contact Dermatitis is going over the patients history along with a Patch Test.
Patch Tests: The substance that is believed to be causing the problem is applied on the top part of the patients back for a period of 48 hours to see the reaction of the skin.
Una vez retirados, se debe hacer una primera lectura a las 48 horas y una segunda a las 72-96 horas, aunque a veces puede ser incluso más tarde según las sustancias.
What are the substances most frequently involved in Contact Dermatitis?
The substances that most commonly cause Contact Dermatitis are:
- Nickel:Jewelry, eyeglass frames and belt buckles.
- Mercury: Especially by direct contact with antiseptics (mercurochrome) and broken thermometers.
- Balsam of Peru: Some cosmetics have this.
- Tires: Although the sources of contact are countless, perhaps the most important is the use of running shoes.
- Cosmetics Perfumes
- Potassium dichromate: Usually after contact with dyed skins (shoes, coats, chrome objects, etc).
- Cobalt: Contained in paints and crayons, metal objects, etc.
- Wood tar: Mainly used in creams and ointments.
- Benzocaine: Used for children as a topical anesthetic and also to relieve itching.
- Neomycin: Used as an antibacterial agent in many creams for burns and even skin infections.