Rheumatic syndromes, including inflammatory arthritis, inflammatory myositis, and vasculitis have been described among multiple different parasitic infections of all parasitic divisions including protozoa, nematode, and platy-helminthes [1,2]. Rheumatic pain is the main clinical manifestation of rheumatic syndromes and is defined as; pain involving articular (related to joints) and/or extraarticular structures (related to tendons and muscles) [3]. Evidence for underlying parasitic infection should be sought in patients presenting with unexplained or atypical rheumatic syndromes [4,5]. Diagnosis of parasitic rheumatism is based on the demonstration of infection with a pathogenic parasite, lack of response to antiinflammatory agents, especially non steroidal anti-inflammatory drugs (NSAD), and improvement following anti-parasitic therapy with eradication of the parasite [1]. Many terms were introduced to describe the condition, e.g. reactive arthritis [6], rheumatic syndromes associated with parasites Introduction: Many intestinal parasites can induce a variety of rheumatic syndromes as a result of direct infiltration of musculoskeletal structures or an immune mediated mechanism.Objectives: In this study, patients having unexplained rheumatic pain were examined to identifying the frequency of intestinal parasitic infection among them and which of them fulfilling parasitic rheumatism criteria.Methodology: Stool samples of 107 patients having un explained rheumatic pain were examined to explore patients with parasitic rheumatism and rheumatologic blood investigation beside plan X ray for the affected joints were done.
Results:The results showed that 50 patients out of 107 had parasitic infection. Cryptosporidium infection was the commonest (48.0%) followed by C. cayetanensis (32%), G. lamblia (24%), B. hominis (20%) and E. histolytica (8%). Beside Microsporidia, S. mansoni, A. lumbricoides and S. stercoralis were 4% for each. Some patients had mixed and triple parasitic infection. Infected parasitic patients fulfilling parasitic rheumatism criteria were 16/50 (32%). Giardiasis patients having parasitic rheumatism constituted 8/16 (50%) and were the commonest. The other eight (50%) patients had Cryptosporidium, C. cayetanensis, E. histolytica/dispar and S. stercoralis. Two patients per each parasite. Giardiasis patients with parasitic rheumatism were females. Half of them (50%) were < 15 years, complained of mono-articular joint pain, while the other were adults, complained of poly-articular joint pain.
Conclusion:Due to similarity of musculoskeletal presentations of parasitic diseases to many rheumatic diseases; consequently the