Stuttering is the most common type of fluency disorder, affecting approximately 1% of the population.

Stuttering is characterized by disruptions in the flow of speech, such as repetitions, prolongations, and blocks.

Psychogenic stuttering is not a recognized type of stuttering. Developmental stuttering, neurogenic stuttering, and mixed stuttering are all recognized types.

Cluttering is characterized by rapid speech, which can make it difficult for others to understand.

Neurogenic cluttering is not a recognized type of cluttering. Primary cluttering, secondary cluttering, and mixed cluttering are all recognized types.

The primary goal of treatment for stuttering is to reduce the frequency and severity of stuttering, improve communication skills, and, in some cases, eliminate stuttering completely.

Surgery is not a common treatment approach for stuttering. Speech therapy, medication, and behavioral therapy are all common treatment approaches.

The primary goal of treatment for cluttering is to slow down speech rate, improve articulation, and improve fluency.

Surgery is not a common treatment approach for cluttering. Speech therapy, medication, and behavioral therapy are all common treatment approaches.

The prognosis for individuals with fluency disorders is generally good. Most individuals experience significant improvement with treatment.

Family history of fluency disorders, male gender, and neurological conditions can all increase the risk of developing a fluency disorder.

Developmental stuttering is the most common type of stuttering in children. It typically begins between the ages of 2 and 5 years.

Rapid speech is not a common characteristic of developmental stuttering. Repetitions, prolongations, and blocks are all common characteristics.

Primary cluttering is the most common type of cluttering in children. It is thought to be caused by a combination of genetic and environmental factors.

Nasal speech is not a common characteristic of primary cluttering. Rapid speech, disrupted speech flow, and slurred speech are all common characteristics.