Introduction: Preeclampsia (PE) is one of the three main causes of maternal mortality. It is called superimposed PE when, in a pregnant patient with a history of primary or secondary chronic arterial hypertension, blood pressure increases and de novo proteinuria appears or worsens and/or biochemical data such as thrombocytopenia or increased liver enzymes are added. Chronic arterial hypertension predisposes patients to developing it, with a higher risk of complications and severity. Case presentation: Here, we present the case of a 25-year-old patient with a history of crystal, crack, and cocaine use for 7 years and a diagnosis of high blood pressure since she was 22 years old, who developed severe PE resistant to antihypertensive drugs. Conclusions: The reported case showed severe hypertension in pregnancy (defined as systolic blood pressure ≥160 mm Hg or diastolic blood pressure ≥110 mm Hg), which persisted because severe hypertension continued despite the designated treatment, which, considering the patient’s age, forced us to suspect secondary hypertension. The incidence of secondary hypertension in patients with superimposed PE is rare. According to the American Heart Association, it occurs in 10% of the cases and is associated with greater maternal and fetal complications. This should be suspected in women <35 years of age with severe or resistant hypertension, without a family history of hypertension, or with biochemical parameters for hypokalemia, hyperazotemia, and albuminuria in the early stages of pregnancy.