A Highly Sensitive Person (HSP) has a nervous system that processes sensory and emotional information more deeply and thoroughly than average. The trait, formally called sensory processing sensitivity (SPS), was first described by psychologist Dr. Elaine Aron in the mid-1990s. It is not a clinical diagnosis or a disorder. Rather, it is a temperament trait with a strong biological basis, observed in roughly 15 to 20 percent of the human population and in over 100 other species.

The core features of high sensitivity can be grouped into four clusters, sometimes referred to by the acronym DOES:

• Depth of Processing: HSPs tend to think deeply about information before acting. They reflect on experiences, weigh many factors in decisions, and often have a rich inner life of thoughts and emotions.
• Overstimulation: Because their nervous systems process input so thoroughly, HSPs become overwhelmed more quickly by loud noises, bright lights, strong smells, crowded spaces, or packed schedules. They typically need more downtime than others to recover.
• Emotional Reactivity and Empathy: HSPs experience emotions intensely, both positive and negative. They are often strongly moved by art, music, and nature, and they tend to pick up on and absorb the moods of people around them.
• Sensitivity to Subtleties: HSPs notice small details that others miss, whether in their physical surroundings, in social dynamics, or in their own bodies (for example, feeling the effects of hunger or caffeine more acutely).

Other common experiences include being easily startled, feeling deeply affected by criticism, becoming anxious under observation or time pressure, and having a low tolerance for violent or distressing media content. Many HSPs also describe feeling "different" from peers throughout their lives, sometimes mistakenly believing something is wrong with them when, in fact, they simply process the world at a greater depth.

Because high sensitivity is a temperament trait rather than a clinical disorder, it does not appear in the DSM-5 or ICD-11 as a diagnosable condition. There is no formal diagnostic procedure for it. Instead, identification typically involves self-reflection, validated self-report measures such as the Highly Sensitive Person Scale (HSPS) developed by Elaine and Arthur Aron, and, in some cases, discussion with a therapist or counselor familiar with the trait.

It is important to distinguish high sensitivity from conditions that may share some overlapping features, such as generalized anxiety disorder, social anxiety disorder, autism spectrum conditions, attention-deficit/hyperactivity disorder (ADHD), and post-traumatic stress disorder (PTSD). A qualified mental health professional can help determine whether what you are experiencing is best explained by the HSP trait, by a clinical condition, or by a combination of both.

Managing high sensitivity effectively involves several strategies:

• Environmental design: Reduce unnecessary sensory input in your living and working spaces. Soft lighting, noise-canceling headphones, and organized surroundings can make a noticeable difference.
• Boundary setting: Learn to say no to social or professional commitments that exceed your capacity for stimulation. Protecting your downtime is not selfish; it is a practical need.
• Stress-reduction practices: Regular mindfulness meditation, deep breathing exercises, gentle physical activity, and adequate sleep help regulate the nervous system and reduce the cumulative effects of overstimulation.
• Reframing the trait: Viewing sensitivity as a strength, which includes deep empathy, creativity, attention to detail, and conscientiousness, rather than a weakness can improve self-esteem and reduce shame.
• Therapy or coaching: Working with a professional who understands sensory processing sensitivity can help you develop personalized coping strategies, address any co-occurring anxiety or depression, and build confidence in navigating a world that often favors less sensitive temperaments.

High sensitivity on its own is not harmful. Many HSPs lead fulfilling, productive lives and consider their sensitivity a gift. However, there are situations where professional support is warranted.

Consider reaching out to a mental health professional if your sensitivity is consistently leading to chronic stress, emotional exhaustion, or burnout. If you find yourself avoiding activities, relationships, or opportunities because you fear overstimulation, or if you are experiencing persistent feelings of anxiety, sadness, or isolation that interfere with your ability to function at work, at school, or in relationships, a professional evaluation can clarify whether the HSP trait alone accounts for your experience or whether a co-occurring condition may need attention.

HSPs who grew up in unsupportive or invalidating environments may carry additional emotional burdens such as low self-worth, people-pleasing patterns, or difficulty trusting their own perceptions. Therapy, particularly approaches like cognitive behavioral therapy (CBT), acceptance and commitment therapy (ACT), or somatic experiencing, can be especially helpful in these cases.

The following resources offer reliable, evidence-based information about sensory processing sensitivity and related concerns:

• American Psychological Association: Journal of Personality and Social Psychology, which has published foundational research on sensory processing sensitivity.
• National Institute of Mental Health: Anxiety Disorders, for guidance on distinguishing between high sensitivity and clinical anxiety.
• Harvard Business Review: How to Manage Your Emotional Reactions, for practical strategies relevant to sensitive individuals in the workplace.