面倒がる	4165
面倒くさがる	6950
面倒臭がる	1814

I'm happy with including these ...ず versions when they are both common and have meanings that are not clear from the base form.
I wonder if this one is two senses?
Also GG5 has: 面倒がる ＝面倒くさがる (⇒めんどうくさい).  I'm wondering if we should add 面倒くさがる as well, although I'm aware it's a typical ...がる auxiliary formation. GG5 has 面倒くさがる and 面倒がる as sub-entries.

@@ -12,0 +13 @@
+<xref type="see" seq="2838111">面倒がる</xref>

面倒がる　is a subentry to 面倒 in gg5 (redirect to 面倒くさがる)

daijs 面倒 entry has 「面倒がらずに辞典を引こう」 as an example sentence in a usage note and めんどうがる listed in the 面倒 entry as a 
派生
daijr てまめ entry: "厄介なことも面倒がらずにすること。おっくうがらずによく働くこと。また、そのさま。"
面倒がらず	17352
面倒がる	4165

Not in any dic by itself but several times more common than the dictionary form of the derivative. 

I'd be fine including the dictionary form instead of this though (we do have an entry for 嫌がる)