Yesterday, my husband came home from laying carpet, which he does everyday and said he has another ingrown hair on his knee and he picked at it and used peroxide. He woke up this morning and his whole knee and areas surrounding it, looks like he has fluid on it. What can I do for him? He doesn't want to go the dr.

It's come to the point where he has no choice. He's going to have to go to the doctor, or is at risk of a possible major infection or even blood poisoning.

Fluid on the knee can be easily aspirated by an orthopedic physician. When it
Gets painful enough, he may change his mind.