What is "heliophobia"

n. (l en fear Fear) of sunlight.

Heliophobia is the fear of the sun, sunlight, or any bright light. It is a type of specific phobia.

Heliophobia refers to light sensitivity:

• In psychology, heliophobia is the morbid fear of sunlight
• In medicine it can refer to:
  • Hemeralopia, day blindness, inability to see clearly in bright light
  • Photophobia, an excessive sensitivity of the eyes to sunlight. Notable causes include:
    • Keratoconus, results in extreme optic sensitivity to sunlight and bright lights
• In biology, heliophobic plants or animals are have an aversion to sunlight. Heliophobous plants are commonly known as "shade-tolerant".