In patients with aphasia, dysarthria or verbal apraxia, also in patients with laryngectomy the most effective methods of communication can be detected by speech therapist. Expressive aphasia: letters or images panel Mild to moderate dysarthria or apraxia: breathing and muscle exercises control with repetition exercises severity dysarthria or apraxia: Electronic aids with keyboard and printer, or screen for outputting the said. After laryngectomy: Replacement language (for example, by a Electrolarynx; laryngeal cancer. Rehabilitation). Speech therapists can also assist in the diagnosis and treatment of swallowing disorders.