Do panic attacks stay forever ?

Not necessarily : They can resolve with proper treatment. Medication plus cognitive behavioral therapy to identify and modify the cause of the panic attacks.

Magnesium: Panic attacks are often associated with feelings of being out of control. In fact, a person's "first" panic attack may well occur when traveling by car, bus, train, or plane. A particularly effective supplement is magnesium (esp. Recommended is peter gilham's natural vitality calm) or holy basil (an herbal remedy that can really help with anxiety/panic -- also a "natural" mosquito repellant!).