700 Children's® – A Blog by Pediatric Experts

Posts by Frances Fei, MD

Posted by: Frances Fei, MD on Mar 10, 2026

The HPV vaccine is safe, well-studied cancer prevention. Learn who should get it, why it matters for both boys and girls, how many doses your child needs, and how it helps protect against HPV-related cancers and genital warts.

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Absent or Delayed Periods: Causes and Treatment of Amenorrhea
Missing periods in teens can be caused by many factors, from hormonal imbalances to anatomical differences. Learn how doctors diagnose amenorrhea, what signs to watch for, and how treatment helps most teens return to healthy, normal cycles.
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11 Period Myths and Facts

Period talk is everywhere, but how do we separate fact from fiction? Here, we breakdown the top 11 myths about periods.

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Pediatric News You Can Use From America’s Largest Pediatric Hospital and Research Center

700 Children’s® features the most current pediatric health care information and research from our pediatric experts – physicians and specialists who have seen it all. Many of them are parents and bring a special understanding to what our patients and families experience. If you have a child – or care for a child – 700 Children’s was created especially for you.

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Sexually Transmitted Infections

Sexually Transmitted Infections: What You Need to Know

Jul 29, 2022

Sexually transmitted infections are infections that are spread from person to person through sexual contact, including vaginal, anal, or oral sex, or other skin to skin contact. They can be caused by bacteria, viruses, and parasites. Read More