Many of us worry from time to time. We fret over finances, feel anxious about job interviews, or get nervous about social gatherings. These feelings can be normal or even helpful. They may give us a boost of energy or help us focus. But for people with anxiety disorders, they can be overwhelming.

Anxiety disorders affect nearly 1 in 5 American adults each year. People with these disorders have feelings of fear and uncertainty that interfere with everyday activities and last for 6 months or more. Anxiety disorders can also raise your risk for other medical problems such as heart disease, diabetes, substance abuse, and depression.

The good news is that most anxiety disorders get better with therapy. The course of treatment depends on the type of anxiety disorder. Medications, psychotherapy (“talk therapy”), or a combination of both can usually relieve troubling symptoms.

“Anxiety disorders are one of the most treatable mental health problems we see,” says Dr. Daniel Pine, an NIH neuroscientist and psychiatrist. “Still, for reasons we don’t fully understand, most people who have these problems don’t get the treatments that could really help them.”

One of the most common types of anxiety disorder is social anxiety disorder, or social phobia. It affects both women and men equally—a total of about 15 million U.S. adults. Without treatment, social phobia can last for years or even a lifetime. People with social phobia may worry for days or weeks before a social event. They’re often embarrassed, self-conscious, and afraid of being judged. They find it hard to talk to others. They may blush, sweat, tremble, or feel sick to their stomach when around other people.

Other common types of anxiety disorders include generalized anxiety disorder, which affects nearly 7 million American adults, and panic disorder, which affects about 6 million. Both are twice as common in women as in men.

People with generalized anxiety disorder worry endlessly over everyday issues—like health, money, or family problems—even if they realize there’s little cause for concern. They startle easily, can’t relax, and can’t concentrate. They find it hard to fall asleep or stay asleep. They may get headaches, muscle aches, or unexplained pains. Symptoms often get worse during times of stress.