should be ready.

code/datums/brain_damage/mild.dm

@@ -42,7 +42,7 @@
 	lose_text = "<span class='notice'>You feel smart again.</span>"
 
 /datum/brain_trauma/mild/dumbness/on_gain()
-	owner.add_trait(TRAIT_DUMB, TRAUMA_TRAIT)
+	ADD_TRAIT(owner, TRAIT_DUMB, TRAUMA_TRAIT)
 	SEND_SIGNAL(owner, COMSIG_ADD_MOOD_EVENT, "dumb", /datum/mood_event/oblivious)
 	..()
 
@@ -55,7 +55,7 @@
 	..()
 
 /datum/brain_trauma/mild/dumbness/on_lose()
-	owner.remove_trait(TRAIT_DUMB, TRAUMA_TRAIT)
+	REMOVE_TRAIT(owner, TRAIT_DUMB, TRAUMA_TRAIT)
 	owner.derpspeech = 0
 	SEND_SIGNAL(owner, COMSIG_CLEAR_MOOD_EVENT, "dumb")
 	..()

code/datums/brain_damage/severe.dm

@@ -13,11 +13,11 @@
 	lose_text = "<span class='notice'>You suddenly remember how to speak.</span>"
 
 /datum/brain_trauma/severe/mute/on_gain()
-	owner.add_trait(TRAIT_MUTE, TRAUMA_TRAIT)
+	ADD_TRAIT(owner, TRAIT_MUTE, TRAUMA_TRAIT)
 	..()
 
 /datum/brain_trauma/severe/mute/on_lose()
-	owner.remove_trait(TRAIT_MUTE, TRAUMA_TRAIT)
+	REMOVE_TRAIT(owner, TRAIT_MUTE, TRAUMA_TRAIT)
 	..()
 
 /datum/brain_trauma/severe/aphasia
@@ -121,7 +121,7 @@
 		stress -= 4
 
 /datum/brain_trauma/severe/monophobia/proc/check_alone()
-	if(owner.has_trait(TRAIT_BLIND))
+	if(HAS_TRAIT(owner, TRAIT_BLIND))
 		return TRUE
 	for(var/mob/M in oview(owner, 7))
 		if(!isliving(M)) //ghosts ain't people
@@ -183,11 +183,11 @@
 	lose_text = "<span class='notice'>You feel in control of your hands again.</span>"
 
 /datum/brain_trauma/severe/discoordination/on_gain()
-	owner.add_trait(TRAIT_MONKEYLIKE, TRAUMA_TRAIT)
+	ADD_TRAIT(owner, TRAIT_MONKEYLIKE, TRAUMA_TRAIT)
 	..()
 
 /datum/brain_trauma/severe/discoordination/on_lose()
-	owner.remove_trait(TRAIT_MONKEYLIKE, TRAUMA_TRAIT)
+	REMOVE_TRAIT(owner, TRAIT_MONKEYLIKE, TRAUMA_TRAIT)
 	..()
 
 /datum/brain_trauma/severe/pacifism
@@ -198,9 +198,9 @@
 	lose_text = "<span class='notice'>You no longer feel compelled to not harm.</span>"
 
 /datum/brain_trauma/severe/pacifism/on_gain()
-	owner.add_trait(TRAIT_PACIFISM, TRAUMA_TRAIT)
+	ADD_TRAIT(owner, TRAIT_PACIFISM, TRAUMA_TRAIT)
 	..()
 
 /datum/brain_trauma/severe/pacifism/on_lose()
-	owner.remove_trait(TRAIT_PACIFISM, TRAUMA_TRAIT)
+	REMOVE_TRAIT(owner, TRAIT_PACIFISM, TRAUMA_TRAIT)
 	..()

code/datums/brain_damage/split_personality.dm

@@ -192,7 +192,7 @@
 	return //no random switching
 
 /datum/brain_trauma/severe/split_personality/brainwashing/on_hear(message, speaker, message_language, raw_message, radio_freq)
-	if(owner.has_trait(TRAIT_DEAF) || owner == speaker)
+	if(HAS_TRAIT(owner, TRAIT_DEAF) || owner == speaker)
 		return message
 	if(findtext(message, codeword))
 		message = replacetext(message, codeword, "<span class='warning'>[codeword]</span>")