The meaning of SSR in the medical specialty includes sympathetic skin response, scavenger receptor. 1. Sympathetic Skin Response: a reflex potential in the skin that occurs after the body receives a stimulus. It is generated by the release of impulses from sympathetic efferent fibers inducing synchronous activity of sweat glands. Measured by a variety of stimulation methods, such as electrical stimulation, shock stimulation, magnetic stimulation and so on. 2. scavenger receptor: scavenger receptor is the causative molecule of RA. ssr can promote body inflammatory t cells, produce inflammatory factors, and target inhibition of ssr-a. Meanwhile, scavenger receptor can improve the condition and severity of rheumatoid disease. Thus, it provides new biomarkers, targets for the diagnosis and treatment of RA. Scavenger receptors are a heterogeneous group of molecules on the surface of phagocytes that exist in at least six different molecular forms.