Neuronal pathways that mediate general aversion to light. Proposed pathways for modulation of autonomic responses, hypothalamic functions, and emotions by light. A. Pathways for inductions of symptoms mediated by dopamine, orexin, histamine, melanin concentrating hormone, oxytocin and vasopressin. B. Pathways for induction of symptoms associated with activation of the parasympathetic system. C. Pathways for induction of symptoms associated with activation of the sympathetic system. Adapted from [10].