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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]
Heberden's nodes typically develop in middle age, beginning either with a chronic swelling of the affected joints or the sudden painful onset of redness, numbness, and loss of manual dexterity. This initial inflammation and pain eventually subsides, and the patient is left with a permanent bony outgrowth that often skews the fingertip sideways.
Bouchard's nodes are hard, bony outgrowths or gelatinous cysts on the proximal interphalangeal joints (the middle joints of fingers or toes). They are seen in osteoarthritis, where they are caused by the formation of calcific spurs of the articular (joint) cartilage.
Erythema nodosum (EN) is an inflammatory condition characterized by inflammation of subcutaneous fat tissue, resulting in painful red/blue lumps or nodules that are usually seen symmetrically on both shins, on the thighs, arms, and elsewhere. [1] It can be caused by a variety of conditions but 20 to 50% of cases are idiopathic.
The nodules may cause pain and hinder function in addition to having a variety of sizes and shapes. The underlying condition determines the localization of the lesions in dystrophic calcification. The elbows, fingers, knees, and forearms are the most often affected regions in people with systemic sclerosis.
The condition generally arises from the patient's knuckles making contact with the incisor teeth during the act of inducing the gag reflex at the back of the throat with their finger(s). [ 3 ] This type of scarring is considered one of the physical indicators of a mental illness , and Russell's sign is primarily found in patients with an eating ...
Synovitis causes joint tenderness or pain, swelling and hard lumps, called nodules. When associated with rheumatoid arthritis, swelling is a better indicator than tenderness. The joints in your hands and fingers feel painful when pressed and when moving or gripping anything.
All these rashes are made worse by exposure to sunlight, and are often very itchy, painful, and may bleed. [9] If a person exhibits only skin findings characteristic of DM, without weakness or abnormal muscle enzymes, then he or she may be experiencing amyopathic dermatomyositis (ADM), formerly known as "dermatomyositis sine myositis". [10]