This is called sensitization. Type IV allergy, Latex allergy glowsticks known as allergic contact dermatitisinvolves a delayed skin rash that is similar to poison ivy with blistering and oozing of the skin see urushiol-induced contact dermatitis. Feel free to MeMail me if I can ever be of service Latex allergy glowsticks. The American Academy of Family Physicians has a good write up on latex allergy. Coeliac disease Eosinophilic gastroenteritis Eosinophilic esophagitis Food allergy Egg allergy Milk intolerance.