Cock's comb extract is rich in hyaluronic acid, which is used as viscosupplementation injection and oral supplementation for osteoarthritis. Hyaluronic acid acts as humectants and topical moisturizing agent to the skin due to excellent moisturizing property. It has anti-inflammatory effect and used in the treatment of ulcer healing and to reduce the intensity of radioepithelitis. It is also used as a topical vehicle for the delivery of drug to the skin in actinic keratosis. In the case of arsenical keratotic nodule, topical application of hyaluronic acid may tends to decrease keratosis by repeated hydration of the skin. Therefore, the study will be conducted to determine any beneficial effect of topical application of cock's comb extract in the treatment of the patients with severe palmar arsenical keratosis.
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Changes in palmer arsenical keratosis
Timeframe: [0 week (baseline), 12 weeks (end)] [ Safety Issue: No]] [Safety Issue: No]