<s>[INST] Three times now over a period of about 3 1/2 years, I have noticed a hardened gland like spot in my groin area. It gets about the size of a grape, and very stiff. Always in a different spot. After a week or so, it goes away. Once right under the skin, the other two times a little deeper. I have always been careful about avoiding STD s, am a regular blood donor, and looking to donate a kidney. I am Female, almost 31. Is this a common occurrence thing, or something to be concerned about? [/INST] Hi, not to worry much for this as this one is nothing but a sebaceous cyst or a lymph node; due to intercurrent infection it gets worse!An FNAC test could confirm this!Take oral antibiotics and revert back to us if necessary!all the best............. </s>