The term NYCTOPHOBE'S FEAR can be summarized as a fear of the DARK. Nyctophobia is an intense fear of darkness, and it is a common phobia that affects both adults and children. People with this fear may experience feelings of panic, dread, and anxiety when in a DARK environment. Symptoms can range from mild to severe, and can include difficulty sleeping, sweating, trembling, and even heart palpitations. Treatment for nyctophobia typically involves cognitive-behavioral therapy, relaxation techniques, and exposure therapy.