Phobias are the most common mental health issue worldwide. These intense, debilitating fears of specific objects or experiences can develop in any one of us. Let’s continue making our way through the “dictionary” of phobias. Here are 3 of the most common phobias starting with the letter “B.”

A Dictionary of Phobias: 3 Most common Phobias Starting With the Letter B.
A Dictionary of Phobias: 3 Most common Phobias Starting With the Letter B.
Original photos from canva.com. Graphic by Haydee Vanegas.

Fears are really common among humans. From an evolutionary standpoint, fears are an adaptation that helps keep us alive. Fears are stimuli that activate survival mechanisms. But when fear is too intense, something else is at play.

Phobias are focused, exaggerated, and irrational fears of something specific. Phobias are the most common mental issue worldwide, which shouldn’t be too surprising considering that there are near-limitless objects and experiences that one could perceive to be dangerous. Phobias are said to be irrational because the underlying fear might not be of something that is actually dangerous.

There are so many phobias that we can fill an entire dictionary with them. In our previous article on phobias, we discussed the three most common phobias beginning with the letter “A.” This series continues as we make our way through the alphabet. Here are three of the most common phobias starting with “B.”

Dictionary of Common Phobias: Bacillophobia

Common "B" Phobia #3 in the Dictionary of Common Phobias: Bacillophobia
Common “B” Phobia #3 in the Dictionary of Common Phobias: Bacillophobia
Original photos from canva.com and pinterest.com. Graphic by Haydee Vanegas.

The first word in this dictionary is Bacillophobia. This is the intense and exaggerated fear of micrboes. The name of this phobia comes from the scientific term for bacteria, bacilli. Someone with bacillophobia has an abnormal and persistent fear of bacteria.

Individuals with this phobia are consumed with the concept of bacteria developing into illness. While many of us are concerned about getting sick, those suffering from bacillophobia take the perceived danger to a whole new level. For that reason, most people with this phobia develop extreme routines and abnormal behaviors designed to help them avoid bacteria. For example, people with bacillophobia may insist that everything be sterilized. This is just one way they attempt to cope with their fear.

Dictionary of Common Phobias: Batrachophobia

Common "B" Phobia #3 in the Dictionary of Common Phobias: Batrachophobia
Common “B” Phobia #3 in the Dictionary of Common Phobias: Batrachophobia
Original photos from canva.com. Graphic by Haydee Vanegas.

The next word in this dictionary is Batrachophobia. This is the intense and irrational fear of amphibians. This phobia is focused on animals such as frogs, newts, and salamanders. The name of this phobia comes from the Greek term for this type of animal: batracho.

No specific cause has been identified for this phobia, mostly because it stems from an irrational fear. People with batractophobia experience an intense aversion to amphibians. Most of them cannot explain the reason for this fear. This phobia might result from a combination of external events and internal predispositions.

Dictionary of Common Phobias: Brontophobia

Common "B" Phobia #3 in the Dictionary of Fears: Brontophobia
Common “B” Phobia #3 in the Dictionary of Fears: Brontophobia
Original photos from canva.com. Graphic by Haydee Vanegas.

The third common “B” phobia in this dictionary is brontophobia, the exaggerated and intense fear of thunder and lightning. Those who suffer with this phobia are fearful of thunder and lightning, whether the are indoors or outdoors. If they are inside, they may take refuge in a closet or basement. The name of this phobia comes from the Greek term for thunder, bronte. This phobia is also known as astraphobia.


The world of fears and phobias is vast—so vast that we can fill a dictionary with them! Even though phobias are the most common mental health issue, there is not much awareness about them. Our goal with this series of articles is to change that and, in the process, de-stigmatize the condition so sufferers feel more comfortable seeking treatment.