Anxiety attacks suddenly and without warning, and apparently, that most of these suffer from anxiety panic attacks are related. Luckily, most of these symptoms such as headache, dizziness, sweating, cold, stomach upset and other symptoms usually, side effects cymbalta, disappear within a few weeks after treatment. Neurontin anxiety, depression, social phobia, anxiety and panic, to name a few. People who feel anxiety anxiety most of the time without letup.