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Certain stimuli can cause the enjoyable tingling feeling known as Autonomous Sensory Meridian Response (ASMR). Additionally, it may induce feelings of calmness, relaxation, drowsiness, or wellbeing. 
Visual triggers include observing someone's compassionate facial expressions or soft motions.

Auditory: Hearing soft voices, tapping, crinkling, stroking, scraping, and whispering
Tactile: Carefully stroking someone's hand, arm, back, or hair
Additional ASMR traits
Usually, the tingling starts on the head and spreads to the upper spine and back of the neck. 
It may also result in a sluggish heartbeat. 
Some claim to experience history in a state of near trance.