The viruses that causes itchy tongue are the common cold, flu viruses, Coxsackievirus and even COVID-19 virus.
Coxsackievirus causes hand, foot and mouth disease and can result in painful blisters on your tongue and other parts of your mouth and can also result in irritation and potential itching.
Although no single virus directly causes an itchy tongue but these viruses can result in an itchy tongue.
Anxiety can also cause itchy tongue.
Anxiety tongue is a range of sensations in your tongue which can occur as a symptom of stress or anxiety.
When you're stressed or are experiencing anxiety your tongue can start tingling, be numb, have a burning feeling or even itching.
Anxiety tongue can also cause a feeling of swelling of the tongue or even a swollen appearance to the tongue.
The anxiety tongue symptoms can be worrisome but they are not usually harmful or anything to worry about and are often just a result of the body's stress response.
When your anxiety goes away and your stress goes away the anxiety tongue symptoms like the tingling, numbness, burning, itching or swollen tongue should also go away.
Treatment for tongue tingling that occurs from anxiety involves treating the anxiety such as through psychotherapy, medications like SSRIs or SNRIs or even a combination of both psychotherapy and medications.
Stress management can also help manage anxiety and stress and reduce the anxiety tongue symptoms.
Stress related tongue symptoms can also result in a scalloped appearance of the tongue due to teeth indentations or even a geographic tongue that has patches that move around.
Other physical symptoms of anxiety include shortness of breath, rapid heart rate, sweating, dizziness, muscle tension, headaches, stomachaches and digestive issues.
Anxiety can also cause fatigue, insomnia as well as shaking or trembling and the symptoms can also be triggered by your body's fight or flight response to perceived threats.