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DIFFERENTIAL DIAGNOSIS
The differential diagnosis for each of the diagnostic and major phenotypic subtypes of rosacea are outlined in Table 37.4.
Table 37.4 Differential diagnosis of rosacea. Occasionally, trichostasis spinulosa has associated erythema, but detection of multiple hairs within the follicular orifice by dermoscopy or microscopic examination of follicular contents establishes the diagnosis. EGFR, epidermal growth factor receptor; HER2, human epidermal growth factor receptor 2; MEK, mitogen-activated protein kinase kinase; SLE, systemic lupus erythematosus; TB, tuberculosis.