📘 Chapter 616.4 · 17α-Hydroxylase/17,20-Lyase Deficiency

Nelson Textbook of Pediatrics 22nd Edition | Rare CAH (<1%). CYP17A1 mutation. Cortisol deficiency, DOC excess → hypertension, hypokalemia. Impaired sex steroid synthesis → 46,XY female phenotype, 46,XX sexual infantilism. Treatment: hydrocortisone + estrogen/testosterone at puberty.

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📋 30 Clinical Scenarios — 17α-Hydroxylase Deficiency (FCPS level)

📇 High‑Yield Review Cards: 17α-Hydroxylase Deficiency

🩺 Symptom‑Based Approach: 17α-Hydroxylase Deficiency

Select a presentation for diagnostic clues.

📋 Stepwise Management of 17α-Hydroxylase Deficiency (Nelson Ch 616.4)

    ⚡ Reflex Prompts — Clinical Decisions in 17α-Hydroxylase Deficiency

    📖 Summary: 17α-Hydroxylase Deficiency — Nelson 22nd Ed