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How Do You Tell the Difference Between Razor Burn and an STI?

Razor burn is an irritation of the skin that occurs after shaving. Hair follicles and the skin may become irritated, resulting in a red rash, tenderness, and small bumps in the affected area. Any part of the body that is shaved can develop razor burn, including the extremely sensitive bikini, or genital, areas. A rash, redness, and large bumps can be quite alarming in this vicinity. Especially as it is possible for the less dangerous conditions to mimic more serious ones—particularly sexually transmitted infections (STI) such as herpes or viral warts.  

The keys to distinguishing razor burn from an STI are pain level and the appearance of any bumps that have appeared. While any rashes or bumps from razor burn may be a little tender, herpes sores are usually quite painful (particularly during urination). Additionally, the genital warts that come from the human papillomavirus usually look and feel rougher. They may also be a pink or grayish color, rather than white-topped or red from inflammation.

Lastly, unless you try to pop or inadvertently shave the tip off of any bumps caused by razor burn, those pimples are probably going to remain closed over. Herpes blisters, however, start out closed but open up to ooze before becoming crusty prior to healing. If it’s just razor burn, give it a few days and take some precautions next time you shave. If you think you have an STI, see a doctor to get it treated. 

Last Updated: April 19, 2017

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