The objective of this case study is to conduct analysis of the relations of individuals with mental disorders, with the use of family approach tools in the municipality of Tianguá-Ceará, Brazil, from April to June 2015. The information was collected through interviews and field diary, during home visits; followed by mapping and analysis of family assessment tools: typology, genogram, ecomap and P.R.A.C.T.I.C.E. The family composition consists of four members, Rosa had hearing impaired (mother and provider of the family) and three children had mental disorders: Carnation (Schizophrenia), Sunflower (severe mental disorder) and Margaret (mentally handicapped). This family lives in extreme social vulnerability according to the Coelho-Savassi Family Risk Scale (ERF-CS). The results showed a female single parent arrangement, scoring 32 at ERF-CS with frail social interaction and distant family relations, marked by mental decompensation and lack of