Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier-Hunziker syndrome

Table 1 Geographical distribution of published cases affected with Laugier-Hunziker syndrome

	Country	No. of cases	Percentage (%)	Ref.
1	France	59	29	[1,14,20-22,24,26,27,30,31]
2	Italy	33	16	[11,12,18,25,28,29,33,34-37,40,63]
3	China	30	14.5	[5,9,10,19,23,58,72]
4	United States	14	7	[13,16,32,42,46,51,60,67-69,73,77,85,88]
5	United Kingdom	13	6	[3,39,45,49,52,54,76]
6	Germany	12	6	[40,61]
7	India	8	4	[47,56,57,70,71,81,86]
8	Turkey	6	3	[7,50,53,62,75,83]
9	Greece	5	2	[6,40,48]
10	Japan	5	2	[8,44,55,59]
11	Lebanon	3	1.5	[17]
12	Portugal	2	1	[23,43]
13	Brazil	2	1	[65,78]
14	Spain	2	1	[66]
15	Australia	2	1	[87]
16	Finland	1	0.5	[4]
17	Ireland	1	0.5	[15]
18	Russia	1	0.5	[38]
19	Switzerland	1	0.5	[41]
20	South Korea	1	0.5	[64]
21	Austria	1	0.5	[74]
22	Serbia	1	0.5	[79]
23	Chile	1	0.5	[80]
24	Romania	1	0.5	[82]
25	Singapore	1	0.5	[84]