Headache disorder is a medical condition that is characterized by pain or discomfort in the head, scalp, or neck. However, there are several antonyms or opposite words that can be used to describe the absence of such pain or discomfort. Some of these antonyms include comfort, ease, peace, relaxation, pleasure, and serenity. When an individual experiences none of the symptoms associated with headache disorder, they are said to be in a state of comfort or ease. Similarly, peace, relaxation, pleasure, and serenity also imply a lack of pain or discomfort in the head, neck, or scalp. These antonyms help to explain the positive experiences that individuals have when they are not suffering from headache disorder.