Type IV hypersensitivity reaction
Three Types
Allergic<unk> : nickel, gold, chromium, poison ivy, poison oak, and poison sumac
Irritant<unk> : solvents, neat oils, kerosene, surfactants in cosmetics, latex, drain cleaners
Photocontact<unk> : interaction with UV light (lime juice and sunlight)
Allergic<unk> : nickel, gold, chromium, poison ivy, poison oak, and poison sumac
Irritant<unk> : solvents, neat oils, kerosene, surfactants in cosmetics, latex, drain cleaners
Photocontact<unk> : interaction with UV light (lime juice and sunlight)
Atopic<unk> 
Candida<unk> 
Cercarial<unk> <unk><unk>  herpetiformis
Diaper<unk> 
Dyshidrotic<unk> 
Neonatal seborrhoeic<unk> 
Nummular<unk> 
Perianal streptococcal<unk> 
Perioral<unk> 
Poison Oak, Ivy, Sumac<unk> 
Seborrheic<unk> 
Stasis<unk>
Contact dermatitis
Febrile
Drug rash
Diffuse distribution
Cercarial dermatitis
Varicella
Cold urticaria
Smallpox