What else is commonly affected in ectodermal dysplasia beyond teeth?

• A. Skeletal anomalies only
• B. No other anomalies
• C. Only brain anomalies
• D. Hair abnormalities, sweat glands, and other ectodermal derivatives are affected (e.g., hair, glands)

Answer: (D)

Ectodermal dysplasia is a disorder that mainly affects structures derived from the ectoderm, so its hallmark isn’t just the teeth but also other ectodermal derivatives. Beyond teeth, it commonly presents with hair abnormalities (thin, sparse, or brittle hair), and problems with sweat glands (reduced or absent sweating), which can lead to heat intolerance. Other affected ectodermal structures may include nails, sebaceous glands, and lacrimal glands. That’s why this option fits best: it recognizes the broader pattern of ectodermal involvement. The other choices shift focus to skeletal or brain features or claim no other anomalies, which doesn’t match how ED typically presents.