Speech and language disorders affect how a person speaks, understands language, expresses ideas, or interacts with others. These challenges may appear in early childhood, during the school years, or later in life due to injury, illness, or neurological change. Understanding the different types of speech and language disorders is the first step toward finding the right support and treatment.

Speech and Language Disorders: Types, Signs, and Help by Age

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Teen

Adult

Speech and language disorders are conditions that make it difficult to produce speech sounds, understand spoken language, use words and sentences, or communicate socially. Some individuals may struggle with pronunciation, while others may have difficulty following directions, forming sentences, or using language in social situations.

Common Types of Speech and Language Disorders

These categories describe the main areas speech-language pathologists evaluate and treat across different ages, from early childhood through adulthood.

These categories describe the main areas speech therapists evaluate and treat across different ages.

Speech and Language Disorders by Age

If you’re concerned about yourself or your child, explore speech and language disorders by age below to find the most relevant information.

Speech and Language Disorders in Children

In children, speech and language disorders often show up as delayed speech, difficulty pronouncing sounds, limited vocabulary, or trouble understanding directions. Some children may struggle to combine words, follow routines, or use language to interact with others.

Early identification is especially important during childhood. Speech therapy helps support communication skills during critical stages of development, building a strong foundation for learning, social interaction, and confidence at home and in school.

Speech and Language Disorders in Teens

During the teenage years, speech and language disorders may affect social communication, classroom participation, and self-confidence. Teens may struggle with organizing language, understanding complex instructions, or speaking fluently, especially in academic and social settings. Speech therapy can help teens build clear communication and self-advocacy skills.

Speech and Language Disorders in Adults

In adults, speech and language disorders may develop after a stroke, traumatic brain injury, neurological condition, or progressive disease such as Parkinson’s or Alzheimer’s. Adults may experience difficulty finding words, speaking clearly, understanding conversations, or swallowing safely. Speech therapy focuses on restoring communication skills, supporting independence, and improving quality of life.

How Speech Therapy Helps

Speech therapy helps individuals improve communication, language understanding, speech clarity, and social interaction. Therapy is tailored to the person’s age, diagnosis, and goals, whether that involves helping a child develop early language, supporting a teen in school, or helping an adult regain skills after injury or illness.

When to Seek Speech Therapy

Parents, caregivers, and adults should consider speech therapy when communication difficulties interfere with daily life, learning, work, or social interaction. Early evaluation is especially important if a child is not meeting speech or language milestones, or if an adult experiences sudden changes in speech or understanding following illness or injury.

You may want to consider speech therapy if you notice any of the following signs:

Speech that is difficult to understand
Delayed speech or limited vocabulary in children
Trouble understanding spoken language or directions
Stuttering or frequent pauses when speaking
Voice that sounds hoarse, weak, or strained
Difficulty following conversations or expressing ideas
Sudden changes in speech or language after illness or injury

A speech therapy evaluation can help identify speech or language disorders and determine the most appropriate next steps.

f you’re ready to take the next step, you can find a speech-therapist who works with children, teens, or adults.

What to Expect From a Speech Therapy Evaluation

A speech therapy evaluation typically begins with a conversation about concerns, medical history, and daily communication challenges. The speech-language pathologist may observe speech sounds, language skills, understanding, voice, fluency, or social communication using age-appropriate activities and standardized tools. After the evaluation, the therapist explains the results and discusses whether therapy is recommended and what goals may be appropriate.

A speech therapy evaluation usually follows a few clear and supportive steps:

Initial conversation about concerns, history, and goals
Observation and assessment of speech, language, or communication skills
Use of play-based or structured tasks appropriate for the person’s age
Review of results explained in clear, everyday language
Discussion of recommendations, including whether therapy is needed and next steps

When should I seek speech therapy?

Speech therapy should be considered when communication difficulties interfere with daily life, learning, work, or social interaction. Early evaluation is especially important for children who are not meeting speech or language milestones.

What happens during a speech therapy evaluation?

A speech therapy evaluation includes a discussion of concerns, observation of communication skills, and age-appropriate assessments. The speech-language pathologist explains results and discusses recommendations at the end of the session.