You searched for: “achluophobias
achluophobia (s) (noun), achluophobias (pl)
A horror of being in the dark or existing in any unlighted areas: An achluophobia involves not going out at night, increased anxiety as evening approaches, not wanting to look outside the window in order to avoid seeing the nocturnal environment, avoidance of looking into dark rooms, and always having some kind of light available.