R47-R49: Symptoms and signs involving speech and voice

The group of medical conditions categorized between R47-R49 are symptoms and signs concerning speech and voice attributes. They encompass a variety of disturbances or abnormalities related to speech and vocal production, having diverse causes. These could stem from neurological issues, structural abnormalities in the speech and vocal apparatus, or psychological conditions. The symptoms may include dysphasia, where there's difficulty in the articulation of speech or understanding spoken or written language, dysarthria characterized by slurred or slow speech that is difficult to understand due to muscle weakness, or voice disturbances like hoarseness or aphonia (loss of voice). Development, functionality, and regulation of speech and voice can be affected. The progression of these conditions may vary widely depending on the underlying causes and can range from temporary to chronic issues.