What side effect is associated with tetracycline?

A. Hypertension: Tetracycline does not significantly affect vascular tone or fluid balance to cause elevated blood pressure. Antihypertensive interactions are not a known pharmacologic concern with this medication. Blood pressure changes are not a characteristic adverse effect. B. Dry skin: Dry skin is more commonly associated with retinoids rather than tetracycline antibiotics. While mild dermatologic reactions can occur, xerosis is not a prominent or expected side effect. C. Blurred vision: Blurred vision may occur with medications that increase intracranial pressure; although rare cases of pseudotumor cerebri have been reported with tetracyclines, it is not a common or hallmark side effect. D. Photosensitivity: Tetracycline increases skin sensitivity to ultraviolet light, raising the risk of exaggerated sunburn reactions. Clients are advised to avoid excessive sun exposure and use protective clothing or sunscreen. This adverse effect is well-documented and commonly emphasized in patient education.