No evidence of an association between Helicobacter pylori infection and Raynaud phenomenon

Background: Raynaud phenomenon (RP) is a vasospastic condition that manifes ts itself as cold-induced ischemic attacks of the fingers with skin color c hanges. It may be classified as primary (PRP) or secondary (SRP), if associ ated to other diseases, mainly connective-tissue diseases. Recently, the as sociation between PRP and Helicobacter pylori infection has been reported. The aims of this study were to evaluate the prevalence of gastric H. pylori infection in a large group of patients affected by PRP and SRP and to asse ss whether it was more evident in patients with more recent onset of RP. Me thods: Ninety-eight consecutive patients (93 F and 5 M), referring to our v ideocapillaroscopic service for the diagnosis of vascular and connective-ti ssue diseases, were evaluated. Forty-nine of them were affected by PRP and 49 by SRP. Patients were classified as having PRP on the basis of normal se rological and immunological findings, normal videocapillaroscopic examinati on and exclusion of other conditions inducing RP. H. pylori infection was d iagnosed by C-13-urea breath test (UBT). Two groups of 49 age-and sex-match ed controls, respectively, were also evaluated. Results: Patients with SRP resulted significantly older than those with PRP (P < 0.006). UBT was found positive in 22/49 patients with PRP (45%) and in 29/49 patients with SRP ( 59%). The positivity of the respective control groups was 36% and 53% (P = NS). There was no higher prevalence of H. pylori infection in patients with RP lasting for less than 4 years. Conclusions: The results do not confirm the previously reported high prevalence of H. pylori infection in patients with PRP. A high association was not even found between the presence of the microorganism and SRP. There was no difference in the prevalence of H. pyl ori infection among the subgroups with more recent onset of both PRP and SR P.