Abstract
Drug eruption, a mucocutaneous reaction following the entry of drugs into body through injection, oral administration or inhalation, has various clinical manifestations with complex pathogenesis. Recent studies suggest that cytotoxic T lymphocytes take part in the pathogenesis of many kinds of drug eruption. Histologically, drug eruption is characterized mainly by epidermal injury, and more and more evidence has suggested that epidermal T lymphocytes play a vital role in epidermal injury in drug eruption. This paper presents a concise description on the epitope, function, activation modulation, action pathway of epidermal T lymphocytes and their roles in drug eruption. Key words: Drug eruptions; Epidermis; T-lymphocytes
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