Abstract
Gefitinib is an epidermal growth factor receptor inhibitor used in the treatment of non-small cell carcinoma of the lungs, adenocarcinoma of the lungs, and solid malignancies of the head and neck region. A 65-year-old female patient with non-small cell carcinoma lung with bone metastasis was started on gefitinib monotherapy after which the patient noticed papulo-pustular lesions on the scalp, later leading to loss of hair. Dermatological examination revealed erythema, pustules with crusting, along with matting of the hair on the frontoparietal area with some areas of hair loss. Trichoscopic examination showed the absence of follicular openings indicating scarring alopecia. Skin biopsy showed perivascular mixed infiltrate of lymphocytes and neutrophils and absent hair follicles, consistent with gefitinib-induced erosive pustular dermatosis of the scalp, a rare entity.
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