Plumbago zeylanica, also known as Ceylon leadwort or chitrak, has a long history of use in traditional medicine systems, particularly Ayurveda and traditional medicine in Southeast Asia. Traditionally, the root and sometimes the leaves have been used externally to treat various skin conditions, including rashes, eczema, scabies, and other dermatological complaints. The plant is believed to have antimicrobial, anti-inflammatory, and irritant properties, and its application is thought to promote healing of skin lesions and relieve itching. However, there is also caution in its traditional use, as the plant is known to be caustic and can cause blistering or irritation if not properly prepared or diluted.

Scientifically, there is limited evidence to support its efficacy specifically for rashes and hives. Most available studies focus on the antimicrobial and anti-inflammatory properties of its phytochemical constituents (such as plumbagin), primarily in in vitro or animal models. These studies suggest potential usefulness for skin disorders, but clinical trials in humans for the treatment of rashes and hives are lacking. Thus, while the use of Plumbago zeylanica for rashes and hives is well-documented in traditional medicine, its effectiveness and safety for these conditions have yet to be validated by modern clinical research.