Involvement of the kidney often indicates a worse prognosis, with a 10-year survival rate of 30%. The most common histopathologic finding is mild mesangial proliferation, that is followed by focal and segmental necrotizing glomerulonephritis with crescents. Other abnormalities that are found include glomerulosclerosis, IgA nephropathy and interstitial nephritis. Immunofluorescence studies most often reveal faint deposits of C3, IgG or IgM in the primarily mesangium. Constitutional symptoms
These symptoms could consist of asthenia, fever, anorexia, and weight loss. They mostly occur during a severe disease flare. Others
Skin and mucous membranes: 20 to 30% of people with relapsing polychondritis have skin involvement, including aphthous ulcers, genital ulcers, and a number of non-specific skin rashes including erythema nodosum, livedo reticularis, hives, and erythema multiforme. Cardiovascular system: Relapsing polychrondritis may cause inflammation of the aorta. It can also cause leaky heart valves (aortic valve regurgitation in 4 to 10%, mitral valve regurgitation in 2%). Causes
Relapsing polychondritis is an autoimmune disease in which the bodys immune system begins to attack and destroy the cartilage tissues in the body. It has been postulated that both cell-mediated immunity and humoral immunity are responsible.Reasons for disease onset are not known, but there is no evidence of a genetic predisposition to developing relapsing polychondritis. However, there are cases where multiple members of the same family have been diagnosed with this illness. Studies indicate that some genetic contribution to susceptibility is likely. Diagnosis
There is no specific test for relapsing polychondritis.
Eye
Involvement of the eye is rarely the initial symptom but develops in 60% of persons with RP. The most common forms of ocular involvement are usually mild and often consist of unilateral or bilateral episcleritis and/or scleritis, that is often anterior and could be lingering or relapsing. Scleritis that is necrotizing is found to be exceedingly rare. Less often, conjunctivitis occurs. There are also other ocular manifestations that occur in persons with RP, these include keratoconjunctivitis sicca, peripheral keratitis (rarely with ulcerations), anterior uveitis, retinal vasculitis, proptosis, lid edema, keratoconus, retinopathy, iridocyclitis and ischemic optic neuritis that can lead to blindness.Cataract also is reported in relation to either the disease or to glucocorticoid exposure. Neurological
The involvement of the peripheral or central nervous system is relatively rare and only occurs in 3% of persons affected with RP, and is sometimes seen in a relation with concomitant vasculitis. The most common neurological manifestation are palsies of the cranial nerves V and VII. Also hemiplegia, ataxia, myelitis and polyneuropathy have been reported in scientific literature. Very rare neurological manifestations include aseptic meningitis, meningoencephalitis, stroke, focal or generalized seizures and intracranial aneurysm. Magnetic Resonance Imaging of the brain shows multifocal areas of enhancement consistent with cerebral vasculitis in some cases. Kidney
The involvement of the kidney can be caused by primary renal parenchymal lesions, or an underlying vasculitis, or another associated autoimmune disease. Actual kidney involvement is quite rare, elevated creatinine levels are reported in approximately 10% of people with RP, and abnormalities in urinalysis in 26%.