There isn't a phobia that specifically covers letters, but "Logophobia" is the "Fear of words.".
phobia
The irrational fear is called a phobia; the experience or object that triggers a phobia could be called a phobic experience or object.
Ranidaphobia is fear of frogs (12 letters).Batrachophobia is another word (14 letters).Frog phobia is also used (10 letters, but two words).
The fear of chain letters is known as "scripto-phobia." Individuals with this fear may experience anxiety or distress when faced with chain letters, which are messages that urge recipients to forward them to others. This fear can stem from concerns about being drawn into superstitions or scams associated with such letters.
Bebuphobia...that is the fear or phobia of blueberries.
the only phobia of the fear of crickets is crickephobia
To have a phobia is to have a fear.
Mud Phobia is the phobia (fear) of mud. Its called mysophobia, myso meaning mud and phobia meaning fear.
Theophobia- the irrational fear of a god or deity. Remember its only a phobia if its an "irrational" fear, a normal healthy fear is not a phobia.
There is no medical term or phobia name for the fear of immigrants.However a similar phobia called Xenophobia is the fear of foreigners.
Atychiphobia (kakorrhaphiophobia, fear of failure, fear of failing, failure phobia).
We use the term phobophobia to name the fear of fear or of phobias. (The word phobia comes from the Greek for fear.)