What Is the Difference Between Auditory Processing Disorder and ADHD?

What Is the Difference Between Auditory Processing Disorder and ADHD?

Auditory processing disorder (APD) affects how the central auditory nervous system processes sound, while attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental condition involving persistent difficulties with attention regulation, hyperactivity, impulsivity, or a combination of these symptoms.

Both conditions can make it difficult to follow spoken instructions, participate in classroom activities, or keep up with conversations. However, they are not the same disorder, and a person can have both.

The main distinction is that APD involves specific auditory processing difficulties, while ADHD involves a broader pattern of attention and/or behavioral regulation difficulties. Symptoms alone cannot reliably distinguish them, so appropriate professional assessment matters.

APD vs ADHD: Key Differences at a Glance

Feature	Auditory Processing Disorder	ADHD
Primary difficulty	Processing certain types of auditory information	Regulating attention, activity, or impulses
Common symptoms	Difficulty understanding speech in noise, processing rapid speech, or distinguishing sound patterns	Distractibility, disorganization, forgetfulness, impulsivity, or hyperactivity
When difficulties appear	Often noticeable during demanding listening situations	Symptoms occur across multiple settings, although severity varies by situation
Hearing thresholds	May be normal, although hearing loss can coexist	ADHD itself does not establish hearing loss
Evaluation	Specialized audiological assessment when indicated	Developmental, behavioral, and clinical assessment
Can occur together?	Yes	Yes

This comparison describes general patterns. Neither condition can be diagnosed from a checklist of listening or classroom behaviors alone.

What Is Auditory Processing Disorder?

Auditory processing disorder, sometimes called central auditory processing disorder (CAPD), involves difficulty with the neural processing of auditory information within the central auditory nervous system.

Auditory processing contributes to abilities such as:

• Distinguishing between certain sounds.
• Understanding speech when background noise is present.
• Processing rapid or competing speech.
• Recognizing sound patterns and timing differences.
• Determining where a sound originates.
• Processing different auditory information presented to each ear.

For example, a child might understand a teacher reasonably well during a quiet conversation but struggle when several classmates are talking.

Someone with APD may have normal hearing sensitivity on a standard audiogram. However, normal hearing thresholds do not prove APD, and hearing loss may also occur alongside auditory processing difficulties.

Listening and understanding speech require auditory, language, and attention-related processes working together. That overlap is one reason APD assessment can be complex.

ASHA emphasizes that APD must be distinguished from hearing loss, language disorders, attention difficulties, and other conditions with similar symptoms.

See the American Speech-Language-Hearing Association’s clinical guidance on APD.

What Is ADHD?

Attention-deficit/hyperactivity disorder is a neurodevelopmental condition characterized by persistent symptoms of inattention, hyperactivity, impulsivity, or a combination of these patterns.

ADHD has three recognized presentations:

• Predominantly inattentive: Difficulties with sustained attention, organization, following through, and managing distractions.
• Predominantly hyperactive-impulsive: Difficulties involving activity regulation, restlessness, interrupting, or impulsive behavior.
• Combined: Significant symptoms from both groups.

Not everyone with ADHD is noticeably hyperactive.

For example, a child with predominantly inattentive ADHD might quietly lose track of assignments, forget instructions, and struggle to organize schoolwork.

ADHD symptoms begin during childhood, although some people are not diagnosed until adolescence or adulthood.

Diagnosis requires a broader assessment of symptom history, duration, impairment, and functioning across settings.

According to the National Institute of Mental Health, ADHD symptoms must persist for at least six months, begin before age 12, occur in more than one setting, and interfere with functioning.

Why Do APD and ADHD Look So Similar?

Both conditions can affect how someone responds to spoken information.

A child who misses instructions may appear distracted, forgetful, or unwilling to cooperate. However, the reason for the difficulty is not always apparent from observing the behavior.

For example, consider a teacher giving several verbal instructions in a noisy classroom.

A child with APD may have difficulty processing parts of the spoken message because competing sounds interfere with auditory processing.

A child with ADHD may miss parts of the instructions because their attention shifts away from the speaker.

A child with both conditions may experience difficulties involving auditory processing and attention simultaneously.

Language comprehension, hearing sensitivity, fatigue, and classroom conditions can also influence performance.

This is why listening difficulty in noise may raise suspicion of APD but does not establish that ADHD is absent.

Signs That May Suggest Auditory Processing Difficulties

Possible APD symptoms include:

• Difficulty understanding speech in noisy environments.
• Frequently requesting repetition of spoken information.
• Trouble understanding rapid speech.
• Difficulty processing information when multiple people speak.
• Misunderstanding certain similar-sounding words.
• Difficulty identifying the location of sounds.
• Inconsistent responses during spoken communication.
• Trouble following complex auditory instructions.

Some people may also have difficulty recognizing certain changes in tone, rhythm, or auditory patterns.

These symptoms are not unique to APD. Hearing loss, language disorders, and other conditions can cause similar difficulties.

Signs That May Suggest ADHD

ADHD symptoms may include:

• Difficulty staying engaged during tasks.
• Frequently losing items or forgetting responsibilities.
• Problems organizing activities or managing time.
• Difficulty following through on instructions.
• Being easily distracted.
• Restlessness or difficulty remaining seated when expected.
• Interrupting others or acting impulsively.

A person does not need to experience every symptom.

ADHD-related difficulties may affect spoken instructions, written assignments, household responsibilities, social interactions, and other activities.

Symptoms may be more or less noticeable depending on the environment, task demands, interest, and available support.

Can a Child Have Both APD and ADHD?

Yes. APD and ADHD may coexist.

Having an ADHD diagnosis does not automatically rule out auditory processing difficulties. Likewise, receiving an APD diagnosis does not mean a child cannot also have ADHD.

However, overlapping symptoms require careful interpretation.

Attention affects performance during auditory testing, and listening difficulties can interfere with classroom performance.

An audiologist must consider whether a low auditory test score reflects a specific auditory processing difficulty or may have been influenced by attention, language comprehension, fatigue, or another factor.

A coordinated evaluation may therefore involve more than one professional.

How Are APD and ADHD Diagnosed?

Diagnosing these conditions involves different but sometimes complementary assessments.

How APD Is Evaluated

An audiologist evaluates hearing and determines whether specialized central auditory processing assessment is appropriate.

The evaluation may include a history of listening difficulties, hearing assessment, and selected auditory processing measures.

Specialized tests may examine auditory discrimination, sound timing, competing speech, and how information presented to both ears is processed.

The results must be interpreted with the person’s age, hearing status, language abilities, attention, and medical or developmental history in mind.

Our Auditory Processing Disorder Assessment guide explains the evaluation process in greater detail.

How ADHD Is Evaluated

An ADHD evaluation is performed by an appropriately qualified healthcare professional.

It generally involves:

• Reviewing developmental and medical history.
• Assessing symptoms of inattention, hyperactivity, and impulsivity.
• Gathering information about functioning in different settings.
• Considering reports from parents, teachers, or other relevant individuals.
• Evaluating possible alternative or coexisting conditions.

ADHD is not diagnosed through a single blood test, brain scan, or hearing examination.

Similarly, an ADHD rating scale alone does not establish APD.

What Hearing Tests May Be Used During APD Evaluation?

Several hearing tests may be used to understand auditory function and rule out other explanations for listening difficulties.

Pure-Tone and Bone-Conduction Testing

Pure-tone audiometry measures the softest sounds a person can detect at selected frequencies.

When needed, bone-conduction testing helps an audiologist distinguish between conductive and sensorineural components of hearing loss.

Children with mild hearing loss may experience listening problems that resemble certain APD complaints.

Peripheral hearing status therefore needs to be considered before interpreting auditory processing results.

Word Recognition Testing

A word recognition test measures how accurately a person identifies spoken words under controlled conditions.

This provides useful information about speech recognition but does not independently diagnose APD or ADHD.

Speech-in-Noise Testing

A speech-in-noise test assesses how well someone understands speech when competing sound is present.

Difficulty on this test can occur for multiple reasons, including peripheral hearing loss, auditory processing difficulties, and other contributing factors.

A poor score alone is not sufficient to diagnose APD.

Acoustic Reflex Testing

Acoustic reflex testing assesses an involuntary middle-ear muscle response to sound.

It may provide information about auditory pathways as part of a broader evaluation, but it cannot independently diagnose APD or ADHD.

Not every child needs all these tests. The audiologist chooses appropriate procedures based on the clinical question.

At What Age Can APD Be Diagnosed?

There is no single age that applies to every auditory processing assessment.

Many behavioral APD tests are more reliably interpreted in children around seven or eight years old because younger children may show greater variability in development, attention, and test performance.

Some age-appropriate auditory measures can be used earlier, depending on the child’s abilities and available validated testing procedures.

A child does not need to wait until age seven to receive help with listening, hearing, language, or classroom difficulties.

Hearing and speech-language assessment, educational support, and practical communication accommodations may be appropriate before a definitive APD diagnosis can be made.

How Is APD Managed?

APD management should be based on the individual’s assessment findings, communication needs, and everyday listening environments.

Possible approaches include:

• Reducing competing background noise.
• Providing written or visual instructions alongside spoken information.
• Using appropriate seating arrangements.
• Considering remote microphone technology when clinically indicated.
• Practicing selected auditory skills through appropriate interventions.
• Providing speech-language support when language difficulties coexist.
• Using communication strategies such as clarification and repetition.

Remote microphone systems can improve the signal-to-noise ratio by delivering a speaker’s voice more directly to the listener.

They do not necessarily remove all background noise or cure an underlying processing disorder.

Traditional hearing aids may be appropriate when hearing loss is present, but they are not an established universal treatment for APD when hearing sensitivity is normal.

Evidence for individual auditory training programs varies, and treatment benefits cannot be guaranteed.

See our Auditory Processing Disorder Treatment & Management guide for a fuller explanation.

How Is ADHD Treated?

ADHD treatment depends on age, symptom severity, coexisting conditions, and individual needs.

Evidence-based approaches may include behavioral therapy, parent training, educational support, medication, or a combination of interventions.

For some children and adults, medication can reduce ADHD symptoms when appropriately prescribed and monitored.

However, ADHD medication is not a treatment for APD itself.

If both conditions are present, management may need to address attention regulation and specific listening difficulties separately.

Families should work with qualified professionals to determine which interventions are appropriate rather than assuming one diagnosis explains every difficulty.

What Classroom Accommodations Can Help?

Some educational strategies may help children with either condition, even when a final diagnosis is still being investigated.

Examples include:

• Giving short, clearly organized instructions.
• Providing written directions or visual reminders.
• Reducing unnecessary distractions and background noise.
• Checking understanding rather than simply asking whether the child heard.
• Breaking lengthy assignments into manageable steps.
• Allowing appropriate movement or attention breaks.
• Using assistive listening technology when recommended.
• Coordinating with the school’s support team.

The strategies should match the child’s actual needs.

A child may qualify for support through an Individualized Education Program (IEP) or a Section 504 plan when applicable eligibility requirements are met.

Educational assistance should not be unnecessarily delayed while a family waits for every possible diagnostic question to be resolved.

Can Adults Have APD and ADHD?

Yes. Both conditions may be identified in adulthood.

ADHD begins during childhood, although diagnosis may occur much later.

APD may be developmental or may arise following certain neurological injuries or diseases.

Adults with listening difficulties may notice problems during meetings, telephone conversations, or discussions in noisy environments.

Adults with ADHD may experience broader difficulties with organization, sustained attention, time management, and task completion.

Both may occur together.

New listening or cognitive difficulties in adulthood should not automatically be attributed to previously unrecognized APD or ADHD. Hearing loss, medication effects, sleep disorders, and other medical conditions may need consideration.

Which Professional Should You See First?

The best starting point depends on the symptoms.

• Listening difficulty: An audiologist can evaluate hearing and determine whether specialized auditory processing assessment is appropriate.
• Broader attention or behavioral difficulties: A pediatrician, primary care clinician, psychologist, psychiatrist, or other qualified professional can evaluate possible ADHD.
• Language comprehension concerns: A speech-language pathologist can assess relevant language abilities.
• Overlapping difficulties: A coordinated evaluation may involve several professionals.

Families should describe where difficulties occur, when they began, and how they affect everyday functioning.

Keeping examples from home, school, or work may help professionals distinguish between possible causes.

Frequently Asked Questions

Can a Child Have Both APD and ADHD?

Yes. APD and ADHD are distinct conditions that may coexist. Assessment should consider whether difficulties arise from auditory processing, attention regulation, language, hearing loss, or several factors together.

Is APD a Type of ADHD?

No. APD concerns central auditory processing, while ADHD involves persistent difficulties with attention regulation, hyperactivity, impulsivity, or a combination of these symptoms.

Does ADHD Cause Auditory Processing Disorder?

ADHD does not automatically cause APD. However, attention difficulties can affect performance during listening activities and auditory processing assessments. The two conditions must be distinguished carefully.

Can a Child With APD Pass a Hearing Test?

Yes. Some children with APD have normal pure-tone hearing thresholds. A routine hearing test does not independently establish or exclude central auditory processing difficulties.

Is APD Usually Diagnosed at Age Five or Six?

Not necessarily. Many specialized behavioral APD tests are more reliably interpreted around ages seven or eight. Younger children can still receive appropriate hearing, language, and developmental assessments and classroom support.

Can APD Be Mistaken for ADHD?

Yes. Overlapping symptoms may make differentiation difficult, but the frequency of misdiagnosis should not be assumed without reliable evidence. A comprehensive evaluation can help determine which condition or conditions are present.

Do ADHD Medications Treat APD?

No. ADHD medications may help appropriately diagnosed ADHD symptoms, but they are not established treatments for APD itself. Some people may have both conditions and require separate interventions.

Can Remote Microphone Systems Help Children With APD?

They may help selected children understand speech in difficult listening environments by improving the signal-to-noise ratio. The need for a system should be determined through individualized assessment, and benefits vary.

Will a Child Outgrow APD?

Auditory processing abilities can change with development and experience. Some children improve or develop effective coping strategies, while others continue to experience listening difficulties. Outcomes cannot be predicted from age alone.

The Bottom Line

Auditory processing disorder and ADHD can produce similar classroom and communication difficulties, but they are not interchangeable diagnoses.

APD involves processing auditory information, while ADHD involves broader patterns of inattention, hyperactivity, impulsivity, or a combination of these symptoms.

Some individuals have both conditions. Hearing loss, language disorders, and other developmental or medical factors can also contribute to the same complaints.

Accurate assessment by appropriate professionals helps identify what is actually causing the difficulties and guides practical, individualized support at home, school, or work.

Medical disclaimer: Apex Brain & Hearing Health provides general educational information and does not replace individualized medical advice, diagnosis, or treatment.