Source: The Great Interpretation of Dreams (Ibn Sirin)
Anxiety in a dream indicates instability of affairs, confusion, and hesitation.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Anxiety indicates fear of the future or waiting for something.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Anxiety is interpreted as worry. Whoever sees himself anxious will be afflicted with worry.