Goosebumps

Goosebumps are small bumps on the skin that appear in response to fear, cold temperatures, or excitement. They are caused by the contraction of tiny muscles called arrector pili, which make the hair stand up and cause the skin to pucker. Goosebumps usually appear on the arms, legs, and back, but can occur anywhere on the body. They may last for a few seconds or up to a few minutes. Symptoms may vary in intensity and can range from a mild tingling sensation to an intense feeling of fear.