Obsessive-compulsive disorder (OCD) is characterized by unwanted thoughts or behaviors that seem impossible to stop or control. If you have OCD, you may be troubled by obsessions, such as a recurring worry that you forgot to turn off the oven or that you might hurt someone. You may also suffer from uncontrollable compulsions, such as washing your hands over and over.
Buspirone is a drug indicated for the treatment of anxiety. This drug has high efficacy for Generalized Anxiety Disorder and is particularly effective at reducing the cognitive and interpersonal problems associated with anxiety. Unlike benzodiazepines, buspirone does not have a sedative effect or interact with alcohol. Most importantly there is a very low risk of developing a dependence on buspirone. Its side effects are minimal but can include dizziness, nervousness, and headaches. BuSpar and Vanspar are brand names associated with buspirone.

Some research suggests that people who have panic disorder might be very sensitive to sensory experiences (such as sunlight, smells and changes in the weather), but there's not enough evidence yet to say for sure. Also it's not clear whether having a high level of sensitivity to these sorts of things is something that might cause you to develop panic disorder, or whether it may be an effect of having it.

A phobia is an unrealistic or exaggerated fear of a specific object, activity, or situation that in reality presents little to no danger. Common phobias include fear of animals (such as snakes and spiders), fear of flying, and fear of heights. In the case of a severe phobia, you might go to extreme lengths to avoid the thing you fear. Unfortunately, avoidance only strengthens the phobia.
People with panic attacks often report a fear of dying or heart attack, flashing vision, faintness or nausea, numbness throughout the body, heavy breathing and hyperventilation, or loss of body control. Some people also suffer from tunnel vision, mostly due to blood flow leaving the head to more critical parts of the body in defense. These feelings may provoke a strong urge to escape or flee the place where the attack began (a consequence of the "fight-or-flight response", in which the hormone causing this response is released in significant amounts). This response floods the body with hormones, particularly epinephrine (adrenaline), which aid it in defending against harm.[9]
These physiological responses can actually help us to survive. However, sometimes we experience these physiological responses, like an increased heartbeat, that are not in the presence of danger at all, but something else entirely. In these cases, our bodies can misinterpret these physiological signals as being indicators of danger or a "true threat." For example, people may experience learned anxiety due to previous associations between elevated heart rate and panic attacks and may misinterpret bodily sensations as signs of imminent death or loss of control. In this way, one may start to fear these physiological responses, which is what we call "fear of fear" (Craske & Barlow, 2007). "Fear of fear" maintains or perpetuates panic attacks and panic symptoms, which becomes a vicious cycle. In other words, you experience an increased heart rate, which you interpret as negative, which makes you feel anxious, which further makes your heart rate increase and it often spirals from there. These associations may almost happen automatically, even without conscious thought, but this is what is likely going on behind the scenes.

Paula had her first panic attack six months ago. She was in her office preparing for an important work presentation when, suddenly, she felt an intense wave of fear. Then the room started spinning and she felt like she was going to throw up. Her whole body was shaking, she couldn’t catch her breath, and her heart was pounding out of her chest. She gripped her desk until the episode passed, but it left her deeply shaken.

Cognitive behavioral therapy has been shown to help with treating panic disorder and agoraphobia. According to a study published in December 2013 in the journal Behaviour Research and Therapy, its effects lasted as long as two years after the initial treatment. And a study published in August 2017 in the Journal of Consulting and Clinical Psychology suggested that it may be superior to traditional psychotherapy in the treatment of this condition.
People with panic disorder often worry about when the next attack will happen and actively try to prevent future attacks by avoiding places, situations, or behaviors they associate with panic attacks. Worry about panic attacks, and the effort spent trying to avoid attacks, cause significant problems in various areas of the person’s life, including the development of agoraphobia (see below).