Antonyms for the medical condition known as progressive hemifacial atrophies (PHA) include growth, development, and vitality. This rare disorder causes the deterioration of one side of the face, leading to a range of symptoms such as muscle weakness, drooping, and facial distortion. The opposite of PHA would be a healthy, balanced, and lively appearance. While there is no cure for PHA, treatments such as physiotherapy and surgery can help to manage symptoms and improve quality of life for those affected. By contrast, the antonyms for PHA represent a state of wellness, in which both sides of the face are symmetrical, and facial features are functioning as intended.