man wondering what is a physical allergy

What does Alcoholics Anonymous mean by “Physical Allergy”?

For many years, alcohol use disorder, or alcoholism, has been known as a threefold disease that affects the mind, body, and spirit. Within the disease, three parts are referred to as the spiritual malady, the physical allergy, and the mental obsession. These components, in conjunction, make up the disease of alcohol addiction, as defined by…