diff --git a/code/controllers/subsystem/processing/quirks.dm b/code/controllers/subsystem/processing/quirks.dm
index 1708f6a93d2..20b02be8b80 100644
--- a/code/controllers/subsystem/processing/quirks.dm
+++ b/code/controllers/subsystem/processing/quirks.dm
@@ -34,7 +34,8 @@ PROCESSING_SUBSYSTEM_DEF(quirks)
 		list("Mute", "Soft-Spoken"),
 		list("Stormtrooper Aim", "Big Hands"),
 		list("Bilingual", "Foreigner"),
-		list("Spacer", "Paraplegic")
+		list("Spacer", "Paraplegic"),
+		list("Photophobia", "Nyctophobia"),
 	)
 
 /datum/controller/subsystem/processing/quirks/Initialize()
diff --git a/code/datums/mood_events/generic_negative_events.dm b/code/datums/mood_events/generic_negative_events.dm
index 1fd94e5dbc8..27e2645efd3 100644
--- a/code/datums/mood_events/generic_negative_events.dm
+++ b/code/datums/mood_events/generic_negative_events.dm
@@ -128,6 +128,10 @@
 	mood_change = -3
 	timeout = 5 MINUTES
 
+/datum/mood_event/photophobia
+	description = "The lights are too bright..."
+	mood_change = -3
+
 /datum/mood_event/nyctophobia
 	description = "It sure is dark around here..."
 	mood_change = -3
diff --git a/code/datums/quirks/negative_quirks/negative_quirks.dm b/code/datums/quirks/negative_quirks/negative_quirks.dm
index ea0cbba3fae..9f7a6c87bd3 100644
--- a/code/datums/quirks/negative_quirks/negative_quirks.dm
+++ b/code/datums/quirks/negative_quirks/negative_quirks.dm
@@ -1,5 +1,4 @@
 //predominantly negative traits
-
 /datum/quirk/badback
 	name = "Bad Back"
 	desc = "Thanks to your poor posture, backpacks and other bags never sit right on your back. More evenly weighted objects are fine, though."
@@ -367,6 +366,7 @@
 	hardcore_value = 3
 	mail_goodies = list(/obj/item/reagent_containers/cup/glass/waterbottle)
 
+
 /datum/quirk/item_quirk/nearsighted
 	name = "Nearsighted"
 	desc = "You are nearsighted without prescription glasses, but spawn with a pair."
@@ -445,6 +445,78 @@
 		quirk_holder.toggle_move_intent()
 	quirk_holder.add_mood_event("nyctophobia", /datum/mood_event/nyctophobia)
 
+#define MOOD_CATEGORY_PHOTOPHOBIA "photophobia"
+
+/datum/quirk/photophobia
+	name = "Photophobia"
+	desc = "Bright lights seem to bother you more than others. Maybe it's a medical condition."
+	icon = FA_ICON_ARROWS_TO_EYE
+	value = -4
+	gain_text = span_danger("The safety of light feels off...")
+	lose_text = span_notice("Enlightening.")
+	medical_record_text = "Patient has acute phobia of light, and insists it is physically harmful."
+	hardcore_value = 4
+	mail_goodies = list(
+		/obj/item/flashlight/flashdark,
+		/obj/item/food/grown/mushroom/glowshroom/shadowshroom,
+		/obj/item/skillchip/light_remover,
+	)
+
+/datum/quirk/photophobia/add(client/client_source)
+	RegisterSignal(quirk_holder, COMSIG_CARBON_GAIN_ORGAN, PROC_REF(check_eyes))
+	RegisterSignal(quirk_holder, COMSIG_CARBON_LOSE_ORGAN, PROC_REF(restore_eyes))
+	RegisterSignal(quirk_holder, COMSIG_MOVABLE_MOVED, PROC_REF(on_holder_moved))
+	update_eyes(quirk_holder.get_organ_slot(ORGAN_SLOT_EYES))
+
+	UnregisterSignal(quirk_holder, list(
+		COMSIG_CARBON_GAIN_ORGAN,
+		COMSIG_CARBON_LOSE_ORGAN,
+		COMSIG_MOVABLE_MOVED,))
+	quirk_holder.clear_mood_event(MOOD_CATEGORY_PHOTOPHOBIA)
+
+/datum/quirk/photophobia/proc/check_eyes(obj/item/organ/internal/eyes/sensitive_eyes)
+	SIGNAL_HANDLER
+	if(!istype(sensitive_eyes))
+		return
+	update_eyes(sensitive_eyes)
+
+/datum/quirk/photophobia/proc/update_eyes(obj/item/organ/internal/eyes/target_eyes)
+	if(!istype(target_eyes))
+		return
+	target_eyes.flash_protect = max(target_eyes.flash_protect - 1, FLASH_PROTECTION_HYPER_SENSITIVE)
+
+/datum/quirk/photophobia/proc/restore_eyes(obj/item/organ/internal/eyes/normal_eyes)
+	SIGNAL_HANDLER
+	if(!istype(normal_eyes))
+		return
+	normal_eyes.flash_protect = initial(normal_eyes.flash_protect)
+
+/datum/quirk/photophobia/proc/on_holder_moved(mob/living/source, atom/old_loc, dir, forced)
+	SIGNAL_HANDLER
+
+	if(quirk_holder.stat != CONSCIOUS || quirk_holder.IsSleeping() || quirk_holder.IsUnconscious())
+		return
+
+	if(HAS_TRAIT(quirk_holder, TRAIT_FEARLESS))
+		return
+
+	var/mob/living/carbon/human/human_holder = quirk_holder
+
+	if(human_holder.sight & SEE_TURFS)
+		return
+
+	var/turf/holder_turf = get_turf(quirk_holder)
+
+	var/lums = holder_turf.get_lumcount()
+
+	var/eye_protection = quirk_holder.get_eye_protection()
+	if(lums < LIGHTING_TILE_IS_DARK || eye_protection >= FLASH_PROTECTION_NONE)
+		quirk_holder.clear_mood_event(MOOD_CATEGORY_PHOTOPHOBIA)
+		return
+	quirk_holder.add_mood_event(MOOD_CATEGORY_PHOTOPHOBIA, /datum/mood_event/photophobia)
+
+	#undef MOOD_CATEGORY_PHOTOPHOBIA
+
 /datum/quirk/softspoken
 	name = "Soft-Spoken"
 	desc = "You are soft-spoken, and your voice is hard to hear."