All the basics that you need to know about a nickel allergy, from signs and symptoms, causes, risk factors, when to seek medical advice, screening and diagnosis, treatment, and prevention. Also includes photos. Overall a good source for the basics concerning a nickel allergy.

This is an excellent article about nickel allergies. It gives you the causes of nickel allergies, symptoms, how to prevent it, and what types of medicines will help if you have a reaction. There are also some photos that show actual skin reactions to nickel. Very educational.