A 14-year-old girl with hypertension, headache, and hypokalemia was hospitalized, and her elevated C-reactive protein and erythrocyte sedimentation rate pointed to an inflammatory cause rather than routine primary HTN. In this diagnostic case, the combination of severe HTN plus hypokalemia and inflammatory markers led to the underlying diagnosis being identified.

Why It Matters To Your Practice

• Teen patients with HTN are more likely than adults to have a secondary cause that warrants a targeted workup.

• Hypokalemia alongside HTN should raise concern for mineralocorticoid excess, renovascular disease, or other secondary etiologies.

• Inflammatory markers such as elevated C-reactive protein and erythrocyte sedimentation rate can be an important clue that the process is not simple primary HTN.

Clinical Benefits

• Recognizing this pattern early can speed referral, imaging, and specialty evaluation.

• A structured differential can help clinicians connect headache, HTN, hypokalemia, and inflammation into one unifying diagnosis.

• Prompt diagnosis may reduce the risk of end-organ injury from uncontrolled blood pressure.

Managing Risks

• Do not assume adolescent HTN is benign, especially when symptoms such as headache are present.

• Recheck blood pressure carefully and confirm potassium abnormalities before narrowing the differential.

• Escalate evaluation when HTN is accompanied by red flags such as hypokalemia, systemic inflammation, or persistent symptoms.

The Bottom Line

• In a teen girl with HTN, headache, and hypokalemia, elevated inflammatory markers are a key signal to look for a secondary and potentially serious underlying diagnosis.