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Alzheimer’s disease is a complicated neurological disorder characterized primarily by cognitive decline. 

As Alzheimer’s progresses, it takes a serious toll on both mental function and physical health. 

While memory loss and thinking problems are hallmark symptoms, other less-recognized signs may also appear along the journey. 

One such indicator some are now exploring is the itchy scalp.

In this article, we will examine the current understanding of the proposed connection between an itchy scalp and Alzheimer’s disease. 

But first, let’s understand what Alzheimer’s disease actually is.

What is Alzheimer’s Disease?

Imagine a situation where memories fade, thoughts blur, and familiar faces become strangers.

This is the reality for those facing Alzheimer’s disease, a relentless neurodegenerative challenge that robs older adults of their cognitive abilities.

Predictions cast a daunting shadow—by 2060, an estimated 14 million people may grapple with this relentless disorder.

Named after Dr. Alois Alzheimer, who first identified it in 1906, Alzheimer’s doesn’t discriminate based on age, although it typically affects individuals aged 65 and older.

In some cases, the struggle begins in one’s 40s or 50s.

At the heart of the disease are abnormal deposits of beta-amyloid and tau proteins, weaving plaques and tangles in brain cells.

These unwelcome guests damage neurons and synapses, disrupting the vital regions responsible for learning and memory.

As time passes, this erosion leads to the loss of precious brain tissue, impacting one’s ability to connect and perform everyday tasks.

The journey with Alzheimer’s is marked by an intensifying progression of symptoms.

In the final stages, individuals may lose touch with reality, requiring constant support for even the simplest of daily tasks.

Though widely believed to be influenced by a mix of genetic, lifestyle, and environmental factors, the precise mechanics of Alzheimer’s are still a puzzle we’re piecing together through ongoing research

Common Signs and Symptoms of Alzheimer’s Disease

memory loss
Image Credit: nirvahealth.com

Alzheimer’s disease presents a spectrum of symptoms that evolve over time. In the initial stages, individuals may experience mild forgetfulness and difficulty recalling recent conversations or names. 

As the disease advances, memory loss becomes more pronounced, affecting day-to-day activities. People may struggle with problem-solving, spatial orientation, and language use.

Personality and behavioral changes are also quite prevalent, including mood swings, depression, anxiety, changes in sleep patterns, irritability, and withdrawal from social activities. 

Individuals may have difficulty recognizing familiar faces, exhibit poor judgment, and struggle to complete routine tasks. 

As Alzheimer’s reaches its later stages, communication becomes challenging, and individuals may require extensive assistance for daily living.

Is There a Connection Between Itching and Alzheimer’s Disease?

Itching, also known as pruritus, is a bothersome sensation that makes you want to scratch. 

While often dismissed as a minor annoyance, emerging research indicates itching may, in some cases, serve as an important clue to underlying health conditions.

Studies have demonstrated links between several skin conditions and Alzheimer’s disease

One study published in the Journal of Alzheimer’s Disease found alterations in skin physiology among Alzheimer’s patients, with detectable neurodegenerative disease-related proteins present in human skin tissue.

In another study, 185 elderly patients with mild to severe dementia were evaluated for itch symptoms through multiple methods including self-reports and observations of scratching behavior and marks. 

Researchers found that 36.8% of patients self-reported itch while scratching was observed in 53.5% of patients. 

Even among those who did not self-report itching, 31.4% were found to scratch, suggesting some were unaware of or unable to communicate their itch symptoms accurately.

There have been no studies specifically looking at itching of the head and Alzheimer’s disease.

So it is difficult to say whether there is a definitive connection between the two.

However, on online support forums for Alzheimer’s patients and caregivers, many people have reported their loved ones suffering from dementia experiencing itchy scalps. 

Discussions on these forums suggest itchy heads may not be uncommon amongst individuals living with Alzheimer’s or other dementias.

So, there may be a link between itching and Alzheimer’s, although why this link exists is still uncertain. 

The changes in skin physiology and the presence of amyloid proteins could contribute to pruritus in some Alzheimer’s patients.

However, more research is needed to fully understand the relationship.

Is Scratching Your Head a Sign of Alzheimer’s Disease?

While itching or scratching alone does not definitively indicate the presence or progression of Alzheimer’s disease, it is a symptom that warrants attention from caregivers. 

Observing it alongside other behavioral changes or symptoms can help determine if a medical review is needed.

Constant head-scratching in a person with known cognitive decline could point to deeper issues related to their condition, e.g., worsening of behavioral symptoms or problems with self-care. 

At advanced stages, some patients lose inhibitory control over behaviors like scratching. They may also neglect personal hygiene, increasing scalp irritation.

Caregivers should monitor for changes in scratching patterns or areas of injury/infection from over-scratching. 

An increase in head itching and scratching could coincide with other signs of cognitive or functional decline, such as:

  • Declining short-term memory and ability to learn new information
  • Difficulty with tasks of daily living like bathing, dressing, and eating
  • Increased confusion, agitation, or loss of inhibitions
  • Altered communication through language difficulties or withdrawal

Timely management of such issues impacting a patient’s well-being is important for the coordination of their overall care.

Identifying the Causes of Itching and Scratching

There are often multiple potential reasons why someone may experience itching of the head, especially in older individuals. These reasons may include the following.

1. Infestation, such as Lice:

Lice infestations can cause significant itching, and individuals with Alzheimer’s may struggle to communicate such discomfort. 

Caregivers should carefully examine the scalp for any signs of lice or nits, paying attention to persistent scratching as an indicator.

2. Allergies: 

Allergic reactions to certain substances, such as shampoos, soaps, or even certain fabrics, can lead to itching. 

Caregivers should be mindful of any recent changes in products used and observe if itching coincides with specific exposures. 

3. Changes in Hygiene: 

As Alzheimer’s disease progresses, individuals may exhibit a decline in their ability to adhere to established personal care practices, which may lead to an unclean and itchy scalp. 

These changes can manifest as neglecting regular bathing, not shampooing hair appropriately, or displaying an overall decrease in concern for personal cleanliness.

4. Dry Skin and Scalp: 

Dry skin and scalp can also cause discomfort, prompting individuals to scratch.

A study involving 185 Alzheimer’s patients revealed that a significant percentage, 74.1%, experienced dry skin.

Dryness can cause flakes and tightness that induce scratching urges.

How to Help Prevent Itching and Scratching

Image Credit: mesotheliomahope.com

Proper scalp and skin care is important for alleviating uncomfortable itching and scratching symptoms in individuals living with Alzheimer’s disease. 

Certain hygiene practices, when combined with lifestyle adjustments and medical oversight, can help manage this issue.

1. Routine Hygiene:

Maintaining proper scalp hygiene through regular washing is important for preventing itching.

The scalp should be shampooed at least twice a week using a gentle, fragrance-free formula. 

Thoroughly cleansing with shampoo helps remove excess oils, dirt, dandruff, and potential allergens that can build up on the scalp over time and trigger discomfort. 

In addition to shampooing, the hair should be brushed each day to distribute oils down the hair strands.

This light detangling also helps shed flakes or debris from the scalp that shampooing may have missed. 

On non-wash days between shampoos, cleansing wipes can be used to quickly refresh the scalp and maintain cleanliness. 

It is also essential that any fabrics touching the scalp or skin like clothes and linens are regularly laundered using a fragrance-free detergent. 

Proper cleaning prevents dirt and microbes from accumulating on materials and transferring them back to the skin or scalp where they could provoke itching.

2. Moisturization:

Keeping the scalp and hair properly moisturized is important for preventing dryness and flakes that can cause irritation and itching. 

A lightweight, hydrating moisturizer should be gently applied to the scalp and hair strands after each shampoo while the hair is still damp to seal in moisture. 

3. Limiting Irritants:

Using mild, fragrance-free products approved for sensitive skin can help limit exposure to potential allergens that may trigger scalp reactions. 

Hair care products, laundry detergents, and other items coming into contact with skin should be hypoallergenic.

Activities like rubbing or high heat from hair dryers and styling tools are best minimized as well. 

4. Distraction and Touch Techniques:

Providing engaging activities can help keep the hands of the patient occupied and redirect them away from scratching urges. 

Gentle scalp massages with lightweight oil or lotion can also substitute the sensation of touch while soothing tense muscles. 

These distractions paired with pleasant tactile input may make patients less likely to compulsively pick at their scalp.

5. Nail Trimming:

Fingernails should be kept short, filed, and rounded to discourage deep scratching. Long, sharp nails allow for more vigorous digging and skin damage compared to shorter nails. 

If a patient struggles with restraint, nail trimming or capping may be necessary. This makes forceful scratching much more difficult to perform.

6. Monitor for Skin Conditions:

Caregivers should conduct regular inspections of the scalp looking for any signs of dermatological issues like dandruff, dryness, or rashes. 

These need timely treatment to reduce inflammation and itch triggers. Addressing underlying conditions promptly through safe remedies can help alleviate uncomfortable symptoms. 

Observation also ensures proper hygiene and treatment practices are effectively controlling moisture balance and scalp health.

7. Regular Haircuts:

Keeping hair trimmed to a short, neatly styled cut can make daily upkeep like brushing and washing easier.

This style tends to be less irritating than long hair that touches the neck or falls into the eyes. 

Short hair is also less likely to matte or become tangled, reducing the chances of pulling and scalp aggravation.

Ask the barber or stylist to thin out thick hair for improved breathability.

8. Environmental Factors:

The surrounding environment also plays a role in scalp health and irritation.

Maintaining a moderate indoor temperature avoids excessive sweating that can clog pores and cause itching. 

9. Medical Evaluation:

Seeking a doctor’s assessment is important if itching persists or worsens, to identify and address any underlying causes effectively.

Proactive care through these lifestyle and hygienic adjustments, when combined with medical oversight, can aid in controlling discomforting itching, and scratching in Alzheimer’s patients. 


While an itchy head has not been scientifically proven as a direct symptom of Alzheimer’s disease, research has suggested that skin itching and scratching may be more common among dementia patients. 

Online caregiver support forums also contain reports from caregivers of Alzheimer’s patients experiencing itchy scalps or skin issues.

Therefore, there may be a plausible link between neurodegeneration and an itchy scalp.

Itching in Alzheimer’s patients could also potentially be a side effect of other functional changes caused by the disease rather than a direct symptom. 

While more research is still needed, maintaining excellent skin and scalp health should remain a priority for those living with Alzheimer’s and related dementias.


1. Is severe itching a sign of Alzheimer’s progression?

While itching alone does not indicate faster Alzheimer’s progression, worsening scratching behaviors accompanied by other cognitive/functional declines may suggest more severe disease stages. 

2. What if over-scratching causes skin injuries?

See a doctor to identify/treat any infection risks. Consider nail trims, mittens, or calming activities to curb injury-prone behaviors until the itching subsides. Gentle wound care also promotes healing.

3. What if a loved one refuses skin exams/treatments?

Keeping the patient relaxed and involving them calmly in care can improve acceptance.
Addressing behavioral triggers for resistance also helps in such cases.



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