Everyday stress is a normal response to a specific demand, such as a deadline or exam, and it tends to settle once that situation resolves. Anxiety becomes a clinical concern when the worry is out of proportion to the situation, persists for weeks or longer, feels difficult to switch off, and starts to affect your concentration, sleep, appetite, or how you function at work or home.
Common features of an anxiety disorder include constant restlessness, a sense of dread, muscle tension, irritability, difficulty sleeping, and physical symptoms like a racing heart, sweating, or stomach upset without a clear physical cause. If you find yourself avoiding situations because of fear, or the worry is present most days, that points more toward anxiety than ordinary stress.
This distinction is not something to diagnose alone. A licensed doctor or mental health professional can assess your symptoms, rule out physical causes such as thyroid problems, and discuss talking therapies, lifestyle steps, or other support. Seek help sooner if anxiety is stopping you from doing daily activities.