R45.0: Nervousness

Nervousness, classified under ICD-10 code R45.0, is a condition characterized by feelings of restlessness, tension, or unease, often with no identifiable reason. Individuals experiencing nervousness may notice symptoms such as rapid heartbeat, excessive sweating, trembling, dry mouth, a sense of impending doom, or difficulty concentrating. This condition differs from normal worry or fear as it tends to be excessive, long-lasting, and can interfere with daily activities. Although the exact cause of nervousness isn't fully understood, it's believed to result from a combination of physical, genetic, environmental, and psychological factors. It is important to note that everyone experiences feelings of nervousness at some point, however, when these feelings persist and interfere with day-to-day life, it could indicate a more serious condition, like an anxiety disorder.