Obsessive‐compulsive neurosis, anacastic symptomatology and ABO blood types

Abstract

Determinations of ABO blood types was carried out in 38 patients with obsessive-compulsive neurosis, 48 schizophrenics with anancastic symptomatology, 31 depressives with anancastic symptomatology, 260 schizophrenics free of anancastic symptomatology and 65 depressives free of anancastic symptomatology. Results were compared with a representative sample of the general population. The findings of the present study provide evidence of an association between obsessive-compulsive neurosis and phenotype A, whilst a similar association between ABO blood types and anancastic symptomatology occurring in the course of psychotic disorders was not found. The significance of these findings is discussed with regard to current diagnostic and aetiological issues in obsessive-compulsive neurosis.

Obsessional Personality Traits and ABO Blood Types

“…It was shown in a previous study that obses sive-compulsive patients, compared to a re presentative sample of the general population, are characterized by a higher incidence of phenotype A and a lower incidence of pheno type O (3). In view of a close association between obsessive-compulsive neurosis and obsessional personality (4), it was thought that the possibility of an association between obses sional personality and ABO blood types merits an investigation.…”

Association of psycho-wellness with various blood types in young medical students

“…22 Rinieris et al suggested that patients with either obsessive-compulsive neurosis or hysteria demonstrate a higher incidence of blood phenotype A and a lower incidence of blood phenotype O, as compared to a representative sample of the general population. 23,24 Also, in another study Rinieris et al demonstrated a greater incidence of obsessional personality traits in blood groups A, B and AB than in Blood Group O using 600 participants. The researchers determined that blood group O might be associated with personality traits hindering the development of obsessive-compulsive symptomology.…”

Influence of ABO Blood Type on Symptomatology among Outpatients: Study and Replication

“…These results are consistent with several previous reports. In two studies of Greek patients with obsessivecompulsive disorder Rinieris and co-workers find the frequency of blood type O is significantly lower, and that of blood type A is significantly higher, than in the general population [Rinieris et al" 1978[Rinieris et al" , 1983. They also report that blood type O occurs significantly less often than expected among normal persons with obsessional per sonality traits, while blood type A is more common than expected, although not significantly [Rinieris et al" 1980], They suggest that blood type O is associated with factors which protect against the development of obses sive-compulsive symptoms.…”

“…Previous studies of blood groups in psychiatric dis ease suggest that type A is over-represented in schizo phrenia [Masters, 1967;Czechowicz and Pamnany, 1972;Mendlewicz et al, 1974] and obsessive-compul sive disorder [Rinieris et al, 1978[Rinieris et al, , 1983. Blood type O occurs more often than expected in bipolar illness [Mendlewicz et al, 1974;Parker et al, 1961;Shapiro et al, 1977] and less often in both obsessive-compulsive disorder [Rinieris et al, 1978[Rinieris et al, , 1983 and in individuals with obsessive-compulsive traits [Rinieris et al, 1980], Not all studies find differences according to blood group, however [McKeon and McColl, 1982], A problem with many of these studies is that a large number of statistical tests are performed on data from a single patient sample, which may produce a significant finding by chance.…”

“…Blood type O occurs more often than expected in bipolar illness [Mendlewicz et al, 1974;Parker et al, 1961;Shapiro et al, 1977] and less often in both obsessive-compulsive disorder [Rinieris et al, 1978[Rinieris et al, , 1983 and in individuals with obsessive-compulsive traits [Rinieris et al, 1980], Not all studies find differences according to blood group, however [McKeon and McColl, 1982], A problem with many of these studies is that a large number of statistical tests are performed on data from a single patient sample, which may produce a significant finding by chance. Another problem is that diagnostic criteria often vary between studies, so the results are hard to compare.…”