What can cause small blisters to randomly appear on your ear and back?

- Blister beetles: These beetles can cause blisters when they come in contact with your skin. They are yellow or black beetles with orange stripes.

- Hives: Hives are itchy, red, raised bumps that can appear anywhere on the body, including the ears and back.

- Chickenpox: Chickenpox is a contagious disease that causes itchy, red, fluid-filled blisters that appear all over the body. It is caused by the varicella-zoster virus.

- Shingles: Shingles is a viral infection that causes painful, itchy blisters that usually appear on one side of the body. It is caused by the varicella-zoster virus, the same virus that causes chickenpox.

- Sunburn: Sunburn can cause blisters if the skin is exposed to too much ultraviolet (UV) radiation from the sun.

- Allergic reactions: Allergic reactions to certain foods, medications, or chemicals can cause blisters to form.

- Contact dermatitis: Contact dermatitis is a skin irritation that occurs when the skin comes in contact with a substance that it is allergic to or sensitive to.

- Impetigo: Impetigo is a skin infection that is caused by bacteria. It is characterized by small, itchy, fluid-filled blisters that appear on the face, arms, and legs.

- Scabies: Scabies is a skin condition that is caused by a tiny mite that burrows under the skin. It causes intense itching and small, itchy, fluid-filled blisters.