To Be Afflicted With, To Suffer From
transitive verb, godan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means afflicted and the verb vocab version is to be afflicted with or to suffer from.
わずらう
I was afflicted with an ancient Egyptian disease that turned me into sun god Ra, but now I'm okay. I was a Ra (わずら), but now I'm just me again.
母が認知症を患ってるかもしれないんです。
My mother might be suffering from dementia.
PTSDを患うと、昼夜逆転の生活になりやすい。
People afflicted with PTSD are more likely to reverse daytime and nighttime.
シェルターには、結核を患うホームレスの人がたくさんいます。
In the shelter there are many homeless people sick with tuberculosis.