Lymph nodes are small bean-shaped glands throughout the body. The lymphatic system acts as a drainage or filtering operation, carrying lymph fluid, nutrients, and waste material through the tissues and the bloodstream. Mostly found in the neck, the groin, and under the arms, these nodes swell and become tender during infection or injury. When someone has genital herpes, the glands around the genital area will swell and may be sore.

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