Blistering acute allergic contact dermatitis to poison oak.

Linear blisters in teen exposed to poison ivy.

Chronic ACD on tops of feet due to leather shoes (potassium dichromate).

Chronic lichenified ACD on tops of toes due to shoes (rubber additives).

Chronic subumbilical ACD due to metal snaps on pants (nickel).

Chronic dermatitis on neck due to metal necklace (nickel).

Nickel allergy due to metal ring.

Axillary ACD due to deodorant allergy (formaldehyde).