A Phobia is a persistent excessive and unreasonable fear of a specific object or situation. This disorder is usually accompanied by either avoiding the object or situation, or enduring it with intense distress. The most common phobias include: animal type, natural environment type (e.g., heights, storms), blood-injection-injury type, and situational type (e.g., elevators). 
CBT provides an effective evidenced-based treatment for Phobias, specifically exposure-based treatment.