Astraphobia, also known as astrapophobia, brontophobia, keraunophobia, or tonitrophobia, is an abnormal fear of thunder and lightning, a type of specific phobia. It is a treatable phobia that both humans and animals can develop. The term astraphobia derives from the Greek words ἀστραπή (astrape; lightning) and φόβος (phobos; fear).
A person with astraphobia will often feel anxious during a thunderstorm even when they understand that the threat to them is minimal. Some symptoms are those accompanied with many phobias, such as trembling, crying, sweating, panic attacks, the sudden feeling of using the restroom, nausea, the feeling of dread, and rapid heartbeat. However, there are some reactions that are unique to astraphobia. For instance, reassurance from other people is usually sought, and symptoms worsen when alone. Many people who have astraphobia will look for extra shelter from the storm. They might hide underneath a bed, under the covers, in a closet, in a basement, or any other space where they feel safer. Efforts are usually made to smother the sound of the thunder; the person may cover their ears or curtain the windows.
A sign that someone has astraphobia is a very heightened interest in weather forecasts. An astraphobic person will be alert for news of incoming storms. They may watch the weather on television constantly during rainy bouts and may even track thunderstorms online. This can become severe enough that the person may not go outside without checking the weather first. In very extreme cases, astraphobia can lead to agoraphobia, the fear of leaving the home.
A 2007 study found astraphobia the third most prevalent phobia in the US. It occurs most frequently in children, though it can also develop in teens and adults. It occurs in many children, and should not be immediately identified as a phobia because children naturally go through many fears as they mature. Their fear of thunder and lightning cannot be considered a fully developed phobia unless it persists for more than six months. In this case, the child's phobia should be addressed, for it may become a serious problem in adulthood.
To lessen a child's fear during thunderstorms, the child can be distracted by games and activities. A bolder approach is to treat the storm as an entertainment; a fearless adult is an excellent role model for children.
The most widely used and possibly the most effective treatment for astraphobia is exposure to thunderstorms and eventually building an immunity. Cognitive behavioral therapy is also often used to treat astraphobia. The patient will in many cases be instructed to repeat phrases to himself or herself in order to become calm during a storm. Heavy breathing exercises can reinforce this effort.
Dogs and cats 
Dogs frequently exhibit severe anxiety during thunderstorms; between 15 and 30 percent may be affected. Research confirms high levels of cortisol - a hormone associated with stress - in affected dogs during and after thunderstorms. Remedies include behavioral therapies such as counter-conditioning and desensitization, anti-anxiety medications, and Dog Appeasing Pheromone, a synthetic analogue of a hormone secreted by nursing canine mothers.
Studies have also shown that cats can be afraid of thunderstorms. While it is very rare, there are some unusual exceptions in which cats will hide under a table or behind a couch during a thunderstorm.
See also 
- Johnson, Trevor "Fear of Thunder - Dealing With Astraphobia." Fear of Thunder- Dealing with Astraphobia. 30 Jan. 2009. EzineArticles.com. 14 Oct 2009
- Dennis Coon, John O. Mitterer (2008). Introduction to Psychology: Gateways to Mind and Behavior. Cengage Publishing. p. 482. ISBN 978-0-495-59911-1.
- Fritscher, Lisa "Astraphobia." Astraphobia. 21 Nov. 2008. About.com. 13 Oct 2009
- "Research aimed at finding way to soothe thunderstorm-stressed dogs". Pennsylvania State University. Retrieved 2010-05-21.
- "There's Hope for Thunder-Phobic Dogs". University of Illinois. Retrieved 2010-05-23.
- Cato (2010-08-03). "Thunderstorms Phobia in Cats – Cats and Thunderstorms". Our-cats.com. Retrieved 2011-10-26.