Antonyms for the medical term "Posterior Cerebral Artery Infarction" would include wellness, healthiness, and vitality. Unfortunately, a Posterior Cerebral Artery Infarction, also known as a stroke, can cause significant damage to the brain, leading to loss of function and a diminished quality of life. Antonyms for this condition would represent the opposite of these negative effects, such as strength, energy, and vibrancy. It is essential to take care of your health through proper exercise, a balanced diet, and regular medical check-ups to reduce the risk of suffering from a stroke or other serious medical conditions.