A speech pathologist, professionally referred to as a Speech-language pathologist and commonly called a speech therapist, works with the total array of human communication including, language, speech, fluency, swallowing and cognitive-communication. The speech pathologist prevents and treats disorders through evaluation and diagnosis in persons of all ages.Brain injury or deterioration, developmental disorders or delays, stroke, learning disabilities, hearing loss and other congenital, acquired or developmental issues may lead to speech difficulties. A speech-language pathologist use special instruments to assess problems and develop an individualized plan of care for each patient. There are speech pathologists that conduct research and those that design and develop techniques and equipmen