A highly sensitive person (HSP) is a neurodivergent individual thought to have an increased or deeper central nervous system sensitivity to physical, emotional, or social stimuli. This trait, also known as sensory processing sensitivity (SPS), is considered a normal, healthy personality trait, although one that—like all personality traits—comes with its own advantages and drawbacks. Researchers refer to this trait as Sensory Processing Sensitivity (SPS), environmental sensitivity, and differential susceptibility. According to psychologist Elaine Aron, who first coined the term in the mid-1990s, approximately 20% of the population is highly sensitive, with the trait equally divided between males and females. Other sources estimate this figure at about 30 percent. High sensitivity is considered a normal, healthy personality trait, although one that—like all personality traits—comes with its own advantages and drawbacks.
The concept was popularized in the 1990s by psychologist Elaine N. Aron, who published her book, "The Highly Sensitive Person," in 1996. Interest in the concept has continued to grow since then. According to Michael Pluess, a researcher who specializes in sensitivity at Queen Mary University of London, sensitivity is a continuum. This means that some people are "low sensitive," some people are "high sensitive," and the majority of people fall somewhere in the middle. How sensitive you are is partly due to your genes, and partly depends on the way you are raised. Your genes determine your basic sensitivity level, which means that if you are a highly sensitive person, you were likely born that way. However, in twin studies, identical twins with exactly the same genes can end up with different levels of sensitivity as adults—largely because of their life experiences. Pluess says that sensitive people need a supportive environment to thrive, and get more benefit out of an emotionally healthy upbringing than other people do.
Defining Characteristics and Neurological Underpinnings
A highly sensitive person experiences the world differently than others. Due to a biological difference that they're born with, highly sensitive people are more aware of subtleties and process information deeply. This means they tend to be creative and insightful but it also means they're more prone than others to stress and overwhelm. The key quality is that, compared to the 80% without the trait, HSPs process everything around them much more—reflect on it, elaborate on it, make associations. When this processing is not fully conscious, it surfaces as intuition. This represents a survival strategy found in many species, always in a minority of its members.
HSPs are often negatively described as "too sensitive." But being an HSP isn't a bad thing. Like any personality trait, it comes with challenges, but also many strengths. For example, highly sensitive people tend to excel at creativity, empathy, and the ability to notice things that others miss or make connections that others do not see. In fact, according to Linda Silverman, the director of the Gifted Development Center, high sensitivity is linked to giftedness.
There are also profound differences in the highly sensitive brain. If you are a highly sensitive person, you likely have more activity in areas related to empathy, emotion, and reading social cues, as well as the part of the brain known as the "seat of consciousness," especially when you're in social situations. This suggests that HSPs are highly alert and very tuned into the people around them. A groundbreaking study by Aron and her colleagues found that people who score high on sensitivity have stronger activation of the brain regions involved in awareness, empathy, attention, action planning, higher order cognitive processing and responsiveness to others' needs.
Children who cry easily, become overstimulated quickly, or are highly distressed when others are in pain may have high sensory processing sensitivity, likely due to a mix of genetic and environmental factors. While such children can present challenges for caregivers, they can flourish in supportive environments.
Assessment and Diagnostic Considerations
The test to measure sensory sensitivity in the adult population is known as the highly sensitive person scale. It was first developed and validated by Aron and her husband, Art Aron, in the 1990s. According to Aron's concept of high sensitivity, it isn't a mental health disorder; rather, it is defined, like other aspects of personality, as a trait that exists in each person to varying degrees. HSP isn't a clinical diagnosis in the DSM, but many people identify with the descriptor, says Amy Marschall, PsyD, a licensed clinical psychologist and educator with training in neurodivergence. Empathy is a spectrum, like many qualities, and can cause difficulty if too high or too low. While neither is automatically bad, high empathy can be exhausting.
Strengths and Advantages of High Sensitivity
Being a highly sensitive person can come with many challenges. HSPs may struggle to adapt to new circumstances, demonstrate seemingly inappropriate emotional responses in social situations, and easily become uncomfortable in response to light, sound, or certain physical sensations. HSPs often report that they form deep bonds with others, have exciting dreams and internal monologues, and find great enjoyment in art, music, and human connection.
Despite some drawbacks associated with high sensitivity, evidence suggests it may also offer adaptive advantages. Like all personality traits, there are pros and cons to being highly sensitive. HSPs are often negatively described as "too sensitive." But being an HSP isn't a bad thing. Like any personality trait, it comes with challenges, but also many strengths. For example, highly sensitive people tend to excel at creativity, empathy, and the ability to notice things that others miss or make connections that others do not see.
Challenges and Overstimulation
HSPs are naturally inclined towards empathy, compassion and creativity. For many HSP men, these traits have been treated as 'feminine' and something to be repressed, which can cause stress, depression, anxiety and low self-esteem. Men are often taught from a young age that asking for help and showing their feelings is a sign of weakness. Our society values outward displays of strength and qualities like extraversion, gregariousness, decisiveness and low emotionality. Sensitive people are often misunderstood, and bullied or rejected as a result. This negative stigma makes life even more challenging for men who are highly sensitive.
HSPs absorb a lot of information from the world around them, such as sights, sounds, smells, light and other people's feelings. So much sensory input can lead them to feeling overwhelmed and in need of solitude to recharge. According to Dr. Elaine Aron's definition, the highly sensitive person (HSP) has a sensitive nervous system, is aware of subtleties in his/her surroundings, and is more easily overwhelmed when in a highly stimulating environment.
Coping Strategies and Environmental Considerations
Pluess says that sensitive people need a supportive environment to thrive, and get more benefit out of an emotionally healthy upbringing than other people do. Generally speaking, HSPs prefer a slow pace and like to take time to enjoy subtle experiences.
For children with high sensory processing sensitivity, they can flourish in supportive environments. HSPs may struggle to adapt to new circumstances, demonstrate seemingly inappropriate emotional responses in social situations, and easily become uncomfortable in response to light, sound, or certain physical sensations.
Therapeutic Considerations and Mental Health Context
While high sensitivity itself is not a mental health disorder, the challenges associated with it can intersect with various mental health conditions. The trait is recognized within the broader context of neurodivergence. As a neurodivergent individual, HSPs may experience unique presentations of common mental health challenges. The increased sensitivity to stimuli can contribute to anxiety, particularly social anxiety, and may exacerbate responses to trauma. The deep processing of information, while a strength, can also lead to rumination and emotional exhaustion.
It is important to note that the provided source material does not contain specific therapeutic protocols, hypnotherapy interventions, or evidence-based treatment strategies for HSPs. The sources focus on defining the trait, explaining its neurological basis, describing its advantages and challenges, and offering general coping strategies. They do not provide clinical guidelines for mental health treatment, trauma-informed care approaches, or self-regulation techniques tailored specifically for highly sensitive individuals.
For mental health professionals working with HSPs, the general principles of creating a supportive environment, respecting the need for solitude and slow pacing, and acknowledging the individual's deep processing style would be foundational. However, any specific therapeutic interventions would need to be developed based on broader clinical knowledge, as the provided sources do not detail such approaches.
Conclusion
The Highly Sensitive Person is a well-researched personality trait affecting a significant portion of the population. It is characterized by a deeper processing of sensory, emotional, and social information, leading to both unique strengths and specific challenges. The trait is innate, has a neurological basis, and exists on a continuum. While not a disorder, it can influence an individual's experience of the world and their mental well-being. Understanding this trait is crucial for both HSPs themselves and for those who support them, including mental health professionals. Creating environments that honor the need for depth, solitude, and reduced stimulation can help HSPs thrive. For those seeking to understand their sensitivity or manage its challenges, resources such as the Highly Sensitive Person Scale and literature by researchers like Elaine Aron provide valuable starting points. It is essential to approach high sensitivity with a non-pathologizing perspective, recognizing it as a variation in human experience with its own set of adaptive advantages.