What is the definition or description of: sugi allergy?

Sugi allergy: Japanese Cedar or Subi Tree or Cryptomeria Japonica is a conifer in cypress family. It is the most common cause of allergies in Japan. An allergy occurs when your body’s immune system creates antibodies to a foreign substance causing a reaction that can be mild to severe. For more info see: https://en.wikipedia.org/wiki/Hay_fever_in_Japan