It is important to continue FA supplementation over the long term in patients on methotrexate and FA in order to prevent them discontinuing treatment because of mouth ulcers or nausea and vomiting. Our data suggest that FA supplementation is also helpful in preventing neutropenia, with very little loss of efficacy of methotrexate.

Enthesopathy index in ankylosing spondylitis SIR, We read with interest the report by Mander et al on the use of an enthesis index in ankylosing spondylitis.' We have developed a similar enthesopathy index (EI) based on tenderness over areas of tendon, ligament, or joint capsule insertion. The areas palpated are scored on a similar four point scale (0-3). The areas palpated are the symphysis pubis, vertebral processes at C1/C2, C7/Tl, L12/L1, L5/S1 plus both greater trochanters, pelvic adductor origin, anterior superior border of the iliac crests, ischial tuberosities, sternoclavicular joints, sternocostal joints plus the insertions of the Achilles tendon and plantar fascia. This can give a potential score of 66. We examined this index in 52 patients with ankylosing spondylitis (AS). The index

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Stomatitis is a troublesome adverse effect of disease-modifying anti-rheumatic drug (DMARD) therapy in rheumatoid arthritis (RA) patients. This review presents data to examine the incidence, clinical features and consequences of DMARD-related stomatitis, and suggests an algorithm for its clinical management. The specific objectives of the two studies presented here were to determine the incidence of DMARD-related stomatitis and its effect on DMARD continuation, and secondly to identify the clinical and laboratory risk factors. We investigated two cohorts of patients: (i) a retrospective survey of data collected from drug monitoring clinics run for patients on DMARDs from 1987 to 1994 involving 1539 patients and 2394 drug exposures; (ii) a prospective study of 25 consecutive RA patients presenting with DMARD-related stomatitis compared to 29 RA controls with no history of DMARD stomatitis. The retrospective survey showed that 2% of DMARD patients stopped therapy because of stomatitis, but 55% of these were able to resume the same therapy. In the case control study. 24% of patients discontinued temporarily and 8% permanently. Cases of DMARD-related stomatitis differed from controls in that they had a higher incidence of previous mouth ulcers (40% vs 14%), they smoked less (8% vs 31%) and Schirmer's test was more often abnormal (44% vs 21%). There were no differences in RA severity, disease activity or oral hygiene. Haematinic deficiencies were equally common in cases and controls: 30% for iron, 8% for vitamin B12 and 24% for folic acid. Herpes simplex virus was involved in a minority (8%) of cases. In conclusion, the occurrence of stomatitis in RA patients on DMARD should not lead to cessation of drug therapy, but to a careful evaluation so that patients may be maintained on effective treatment.