Histamine is a biogenic amine that acts as a signaling molecule in the body, playing a key role in various physiological processes. It is involved in regulating inflammatory responses, gastric acid secretion, neurotransmission, and immune responses. Research in the field of histamine focuses on understanding its role in health and disease, as well as developing drugs that target histamine receptors for the treatment of conditions such as allergies, asthma, and gastric ulcers. Additionally, histamine research also examines the mechanisms of histamine release and metabolism, as well as the potential therapeutic applications of histamine modulation in various diseases.