Will a ingrown hair cause swelling?

Yes, an ingrown hair can cause swelling in the surrounding area. When a hair grows back into the skin instead of rising up from it, it can lead to inflammation, irritation, and sometimes infection, resulting in redness and swelling. In some cases, the body may respond with a small cyst or bump at the site of the ingrown hair. If swelling persists or worsens, it's advisable to consult a healthcare professional.