Papillon-Lefévre syndrome (PLS) is a very rare autosomal recessive trait characterized by palmoplantar hyperkeratosis and severe generalized early-onset periodontitis leading to premature loss of both primary and permanent dentitions. The etiopathogenesis of the disorder is multifactorial with genetic, immunological, and microbial factors playing a major role. Other significant factors involved are environmental and reduced host defense mechanism. Consanguinity is a contributing factor because of its relevance to clinical genetics. The genetic defect underlying etiology of PLS is mutations of the gene 11q14-q21encoding for cathepsin C, an enzyme involved in a variety of inflammatory and immune processes. Virulent pathogens and their toxins in the subgingival plaque play a major factor in the initiation and progression of PLS periodontitis. Dysfunction of leukocytes is secondary causative factor. Variable clinical expression, late onset of symptoms, and frequent gene mutations reflect the complexity of the syndrome. Today, over 300 cases been reported in dental and medical literature with more cases discovered among Arabs, Indians, and Africans. About 20%-25% of patients with PLS have increased susceptibility to infections besides overwhelming destructive periodontitis. Management of the disorder directed toward halting periodontal destruction by eliminating the reservoir of causative organisms; using conventional periodontal treatment, oral hygiene instructions, antiseptic mouth rinses; and systemic antibiotic. Skin lesions usually treated with topical application of emollients, keratolytic agents, steroids, and oral retinoid. Any attempt to achieve and preserve healthy oral conditions will improve quality of life in patients with this intriguing syndrome.