The appearance of goose bumps is associated with a variety of stimuli, commonly cold, fear and excitement, and particular sounds, tastes and other stimuli can also cause goose bumps.
External stimuli or emotional changes can stimulate the autonomic nervous system, acting through the sympathetic branch to the erector spinae muscle, causing it to contract and produce goose bumps. Therefore, it is still important to look carefully for any specific changes in environmental conditions and emotional aspects of the body when you get goose bumps.