Anxiety is a feeling that most often manifests as some flavor of worry or fear accompanied by by a degree of physiological arousal. It can also manifest as physiological arousal alone. And it can be a primary disorder or a secondary disorder with biological or psychological origins. As you can tell from these possible manifestations, it's quite common. The foremost psychiatric reference in the USA, The Diagnostic & Statistical Manual of Mental Disorders, devotes an entire section to anxiety disorders of which there 14 individual types.
Anxiety in Oriental Medicine has different though closely related meanings than the western medical senses of the word. IN OM the meaning is limited to "...a feeling that most often manifests as some flavor of worry or fear accompanied by by a degree of physiological arousal." and doesn't include the 14 individual types in the DSM IV TR becaue they are western medicne concepts and irrelevant to Oriental Medicine.
In Oriental Medicine anxiety appears in pathologies of the gallbladder, heart, kidney, and liver. There are approximately 15 Oriental Medicine diagnoses that contain anxiety as a symptom and 5 diagnoses for the western medicine idea of anxiety as a presenting complaint and/or primary disorder. Any or all of the healing methods in Oriental Medicine can be used to treat anxiety. [link to Diseases EW]
Two methods that can be used by a patient are the NADA point prescription or the PTSD point prescription. Both sets of acupoints are on the external ear and can be used with seeds or BB's instead of needles. Retention time for needles, seeds and BB's is 45 minutes. The NADA prescription is in the Addictions section anda PTSD prescription is in the PTSD section.