Muscular or "soft tissue" pain is characterized by medical professionals as "trigger points." Their pain sensation can be sharp, dull, tingling, pins and needles, hot or cold and cause nausea, ear ache, equilibrium disturbance, or blurred vision. These small, hyperirritable sites in the muscle tissue sometimes cause pain to other locations of the body. Trigger Point massage therapy is closely aligned with the eastern technique of accupressure massage.