Absence of Multiple Sclerosis and Demyelinating Diseases among Lacandonians, a Pure Amerindian Ethnic Group in Mexico

Table 1

Main ten causes of medical attention during the visit.

Number	Diagnosis	Nahá	El Tumbo	Lacanjá; Chansayab	Total
1	Acute respiratory disease	89	83	27	199
2	Gastrointestinal disease	21	35	0	56
3	Conjunctivitis	10	5	0	15
4	Dermatosis	20	14	0	34
5	Parasitosis	75	73	9	157
6	Sexually transmitted infections	0	0	0	0
7	Cervical vaginitis	42	32	11	85
8	Fever unknown origin	0	6	0	6
9	Urinary tract infections	12	21	15	48
10	Other	336	198	160	694
	Total	605	467	222	1294