Related Experiment Video
Updated: Jul 18, 2026

Studying Chronic Exposure of Mice to Ultraviolet B Radiation
Published on: August 19, 2025
Medico-historical study of "Kilasa" (vitiligo/leucoderma) a common skin disorder
P V V Prasad1, Vinod Kumar Bhatnagar
1Indian Institute of History of Medicine, Osmania Medical College Building, Putlibowli, Hyderabad 500095.
Abstract:
The earliest known reference to Kilăsa was in 2200 B.C. in the period of Aushooryan. In 1550 B.C. information regarding Vitiligo was noted in the Ebers Papyrus. Atharvavĕda also carries the description of the disease Kilăsa along with several herbal prescriptions. Buddhist literature (Pĭtikăs) especially Vinaya Pĭtika carries the description of Kilăsa. Old Testament also carries the description of white spots i.e. in the Leviticus chapter 13. In ayurvĕda the word Kuşţa was used for all types of skin diseases. Both Kilăsa and Switra are mentioned together in ayurvĕda because of similarity in their aetiology. Kilăsa is also called as Băhya (external) Kuşţa. It is classified into three types based on three Dŏşăs. Prognosis of the disease was also described in ayurvĕda. This disease can be compared with Vitiligo/leucoderma in modern medicine. The Roman Physician Celsus first coined the term Vitiligo in the 2nd Century A.D. This article carries medico-historical references of Kilăsa from ancient to modern literature.
Related Concept Videos
Changes in Skin Color: Clinical Perspectives
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Role of Skin in Vitamin D Synthesis
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).
Leishmaniasis
Pigmentation
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...