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The cause is unknown, but it may be due to an abnormal immune response. [2] Risk factors include family history, certain genetic factors, and exposure to silica . [ 3 ] [ 4 ] [ 5 ] The underlying mechanism involves the abnormal growth of connective tissue , which is believed to be the result of the immune system attacking healthy tissues. [ 6 ]
A herpetic whitlow is a herpes lesion , typically on a finger or thumb, caused by the herpes simplex virus (HSV). Occasionally infection occurs on the toes or on the nail cuticle. Occasionally infection occurs on the toes or on the nail cuticle.
About 20% of people with rheumatoid arthritis develop rheumatoid nodules, which are linked to more severe erosive disease in those patients. [2] The nodules are more common in men, typically manifest in the fifth decade of life, and are primarily found on extensor surfaces like the backs of the fingers and elbows, though they can occur anywhere.
Age. The risk of most causes of joint pain increases with age. This may be due to increased wear and stress on joints over time and a higher likelihood of other underlying medical conditions ...
A rheumatoid nodule is a lump of tissue, or an area of swelling, that appears on the exterior of the skin usually around the olecranon (tip of the elbow) or the interphalangeal joints (finger knuckles), but can appear in other areas. [1]
Caplan syndrome presents with cough and shortness of breath in conjunction with features of rheumatoid arthritis, such as painful joints and morning stiffness. Examination should reveal tender, swollen metacarpophalangeal joints and rheumatoid nodules; auscultation of the chest may reveal diffuse crackles that do not disappear on coughing or taking a deep breath.
An unidentified Fresno County individual died of rabies despite treatment after probably being bitten by a bat, the first human case in the area in 32 years. Bat is the prime suspect in ultra-rare ...
The nodule that appears early in the disease can resemble a bug bite, sebaceous cyst, lipoma, onchocerciasis, other mycobacterial skin infections, or an enlarged lymph node. [4] Skin ulcers can resemble those caused by leishmaniasis , yaws , squamous cell carcinoma , Haemophilus ducreyi infection, and tissue death due to poor circulation. [ 4 ]