Creeping eruptions, caused by the larvae of hookworms penetrating the skin, appear as serpiginous, itchy, red tracks that may be harder to distinguish on darker skin tones. The condition is often intensely itchy and localized to areas like the feet, where the larvae enter. Treatment includes oral or topical anti-parasitic medications, such as albendazole or ivermectin, along with antihistamines to control itching.