Hypersensibility is a term that is often associated with excessive emotional reactions, exaggerated responses to stimuli or an overactive immune system response. Synonyms for hypersensibility include hypersensitivity, hyperreactivity, high sensitivity, overreactivity, increased reactivity, and heightened susceptibility. Individuals who are highly sensitive to external stimuli may experience physical symptoms such as itching, swelling, or respiratory issues, while those with hyperreactivity may exhibit emotional reactions such as anxiety, irritability, or mood swings. Increased reactivity may also be observed in individuals with autoimmune disorders where the immune system attacks the body's own tissues and organs. Identifying the underlying causes of hypersensibility and finding ways to manage or alleviate the symptoms can greatly improve quality of life.