A 23-year-old male military patient from a rural area presented with a persistent cough, significant weight loss, and pruritic, erythematous papules and excoriations on the knee. Microscopic examination of a skin scraping from the knee revealed adult _Phthirus pubis_ and nits. While pubic lice typically infest the pubic area, they can also occur on other body regions, including the eyelashes, axillary area, and scalp. In this case, the patient may have acquired the infection through sexual contact or contaminated bed linens, common in military settings. Additionally, autoinoculation during scratching may have spread the lice to the knee. Healthcare providers should be aware of the potential for _Pthirus pubis_ to migrate to non-perineal hairy locations.