Everyone experiences skin discoloration from time to time. In older adults, these color changes—often referred to as “bruising”—are especially common on areas like the arms. Research shows that many age-related skin changes can make discoloration more noticeable. In many cases these changes are benign, while others may be influenced by medications, sun exposure, or underlying health conditions.
What is Bruising?
Before discussing why older adults may experience skin discoloration referred to as “bruising,” it helps to understand what bruising is.
Clinically, a bruise generally refers to discoloration caused by bleeding beneath the skin following physical impact or pressure. This most often happens after physical impact or pressure. The visible color change associated with a bruise results from blood collecting under the skin and gradually being reabsorbed by the body. As a bruise heals, its color may change over time and can appear differently depending on skin tone and the stage of healing.
The most commonly recognized type is skin (subcutaneous) bruising, which affects the tissue just beneath the skin’s surface. However, bruising can also occur in muscles (intramuscular bruising) and in bones (periosteal bruising). In medical settings, healthcare professionals may describe different depths of tissue involvement when evaluating injuries. These distinctions are not always visible on the skin and require clinical assessment.
Because different types of bruising can look and feel different, appearance alone does not always indicate the cause or severity. A licensed healthcare professional can help evaluate skin discoloration referred to as “bruising” or related symptoms when there are concerns.
Why are Older Adults Susceptible to Skin Discoloration? 8 Common Causes & Risk Factors
Older adults are at greater risk of skin discoloration than other age groups for a variety of reasons. Common age-related causes and risk factors for this phenomenon include:
- Loss of skin elasticity
- Loss of fat tissue
- Stiffening blood vessels
- Sun damage
- Medication side effects
- Vitamin deficiencies
- Chronic conditions
- Greater risk of falling
1. Loss of Skin Elasticity
Aging means the body changes. One such age-related change is altered elastin and collagen production; collagen and elastin are proteins that help give the skin its structure, strength, and elasticity. Changing collagen and elastin levels mean the skin is more brittle and thin. Thinning skin offers less protection against everyday minor bumps, leading to a greater chance of discoloration.
2. Loss of Fat Tissue
Aging can reduce subcutaneous fat, especially in parts of the body more prone to bruising like the arms, meaning less cushioning against potential damage and, therefore, a greater chance of changes in skin color.
3. Stiffening Blood Vessels
Odds of capillary fragility, or weakened blood vessels, increase with age. Besides loss of skin elasticity, blood vessels can weaken due to age-related stiffening, influenced by factors like chronic inflammation and calcium buildup.
4. Sun Damage
Long-term sun exposure can damage the skin, specifically weaken the blood vessels and thin the skin. This sun damage can result in easier bruising, also known as actinic purpura, senile purpura, and solar purpura.
5. Medication Side Effects
Several medications can increase the risk of skin discoloration, including:
- Aspirin
- Anticoagulants (sometimes called blood thinners) like warfarin
- NSAIDs (non-steroidal anti-inflammatory drugs) like ibuprofen
- Corticosteroids like hydrocortisone
- Certain dietary supplements like ginkgo biloba
Since many older adults commonly take both prescription and over-the-counter (OTC) medications (like the ones above) that impact the blood’s ability to clot, they may experience heightened risk of bruises. Medication effects vary widely, and any concerns about skin changes should be discussed with a prescribing healthcare professional rather than making changes independently.
6. Vitamin Deficiencies
This implies causation – suggest change: Certain nutrient deficiencies have been associated with changes in skin appearance in some individuals, according to clinical literature.
7. Chronic Health Conditions
Chronic conditions like kidney disease, liver disease, and diabetes are common among older adults, and they can all increase the risk of skin discoloration. Each condition can impact blood vessel strength, skin thickness, and blood clotting, each of which can contribute to greater odds of bruising. Diabetes may additionally increase the risk of neuropathy, or damaged nerves. Damaged nerves are less likely to send pain signals, meaning someone may be less likely to notice minor bumps that result in discolored skin, potentially leading to repeated trauma to an affected area.
8. Risk of Falls
Falls are a common concern among older adults and may contribute to skin changes following physical impact.
Skin Discoloration is Common, But It Isn’t Always Benign
In many cases, occasional skin discoloration is more of a cosmetic concern rather than one that signals a deeper medical concern. However, an increase in skin discoloration frequency, large swatches of discolored skin, unexplained discoloration, or painful discolored spots can signal a need for closer inspection from a licensed healthcare professional, like a dermatologist.
Any family members or caregivers who notice changes in an aging loved one, such as unusual skin discoloration, should discuss these concerns with a licensed healthcare professional.
Age-related skin discoloration FAQs
What causes actinic purpura?
There are many potential causes and risk factors for actinic purpura, also known as solar purpura and senile purpura. They include, but are not limited to, the following:
- Medications like NSAIDs, blood thinners, and corticosteroids
- Vitamin deficiencies, specifically vitamin K and vitamin C deficiencies
- Long-term UV damage
- Lighter skin tones
- Conditions like diabetes
Why is easy skin discoloration so common in older adults?
Skin discoloration can be common in older adults for a variety of reasons, including thinning skin, increased likelihood of falling, and stiffened capillaries. In most cases, easy skin discoloration in older people is a cosmetic concern. In other cases, however, unexplained discoloration could signal something more serious, such as an unmanaged health condition.
Any family member or caregiver who notices an older adult experiencing unusual patterns in skin discoloration should talk with a licensed healthcare professional to discuss concerns.
Final Thoughts
Skin discoloration along the arms can be a common part of aging. Just because it’s common, however, doesn’t always mean it’s benign. Anyone who has concerns about themselves or a loved one’s skin discoloration can talk to a licensed healthcare professional to address any potential concerns.
Disclaimer: This article is provided for general informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment. Each individual’s health situation is unique. Readers should consult a licensed healthcare provider for guidance related to their personal health concerns.
Wendy Gores, RN