What does the suffix "-phasia" refer to in medical terms?

The suffix "-phasia" pertains to the ability to speak and is often used in medical terminology to describe various speech disorders or conditions related to language. For example, in the context of medical conditions, "aphasia" refers to a loss or impairment of the ability to communicate verbally, which may occur due to brain injury or neurological conditions. This highlights how "-phasia" specifically relates to speech rather than any other actions such as breathing, seeing, or eating, which are represented by different medical terms and suffixes. This distinction is important for understanding conditions that directly involve communication and language processing.