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 and joined the MJH Life Sciences team in December 2019. She graduated from Youngstown State University in 2019 with a bachelor's degree in journalism and a minor in political science. Prior to graduating, Morgan worked as the editor-in-chief of her college newspaper. She went on to work as an assignment editor at a broadcast news station in Youngstown, Ohio before joining 

 You can reach her at mpetronelli@mjhlifesciences.com.

Articles

Early antibiotic exposure disrupts infant immune development by altering gut microbiota, highlighting inosine's potential as a therapeutic target for immune restoration.

Early antibiotic exposure disrupts infant immune memory, study shows

A recent study reveals a staggering 763% rise in nicotine pouch ingestions among young children, highlighting urgent public health concerns.

Study: Nicotine pouch ingestions in young children increased more than 760% from 2020 to 2023

Jeanne Marconi, MD, is a senior vice president for business development and strategic partnerships at Brightline, the leading pediatric mental health solution supporting kids, teens, and their parents. Dr. Marconi is a nationally recognized physician and transformational leader in pediatric and young adult physical and mental health and wellness. Committed to driving systemic change to improve mental health access and improved outcomes for young people, Dr. Marconi serves as a board and committee member for organizations that support youth aging out of foster care and youth who are residents of long-term care facilities. Dr. Marconi is a graduate of New York Medical College and completed her pediatric training at Northshore-Cornell University, Long Island, NY.

Parents and pediatricians navigate the complexities of neurodiversity, emphasizing the need for open communication and better resources for child development.

Understanding neurodiversity: What every parent and pediatrician should know when it comes to your child’s brain development

Get caught up with Contemporary Pediatrics! This list helps you navigate our top stories from the week, all in one place.

Weekly review: Berdazimer gel launch, rise in US measles cases, and more

Contemporary Pediatrics connects pediatricians with peer-reviewed articles, guideline updates, and practice strategies for real-world clinical application.

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Faced with a child who has been exposed to mercury, would you recognize the signs and symptoms? Would you know what questions to ask, which lab tests to draw, and what treatment to initiate?

Liquid mercury: A poisonous plaything

**Editor's Note** Please note that starting January 1, 2025, we will be switching to an online-exclusive publication process. This will allow us to publish case submissions quicker without having to deal with the variables that come along with print publication. All cases will still be eligible for print publication consideration, but publication in our print magazine is not guaranteed and will be up to the editor's discretion. 

Do you have a puzzling pediatric case that you’d like to share with the readers of 

We are looking for intriguing diagnoses that have stumped the experts—a diagnostic “Puzzler”—to help our physicians enhance their day-to-day practices. If you have such a story to tell, tell us.

Here’s what to do: Before you begin, we suggest that first you review the Puzzler 

https://www.contemporarypediatrics.com/case-studies

. Please note the specific style required for writing Puzzler manuscripts.

Next, prepare a draft of your case, including a summary of the presenting symptoms, a case overview, a 

table of the differential diagnosis (MANDATORY)

, and the special aspects of your case that qualify it as a Puzzler, and send it to us. Please note that the differential diagnosis table should also be discussed in the body text. We’ll review your draft and let you know what you need to add or revise before we send the manuscript to peer review for evaluation.

Puzzlers vary in length, and we suggest a minimum of 1,200 words up to a maximum of 2,000 words, but that is because of the complexity of some cases and whether some patients returned for many assessments before their diagnoses were determined. Also, some authors describe the pathophysiology of the differentials in great detail. Please also note no more than 3 authors are allowed per article.

What's most important is to show us the process that you used to analyze the case, including:

Why you decided to order certain tests and why you did not order others.

Peer consultations or why you elected to contact other specialists.

Lab values including vital signs or blood tests.

Labs and values if your patient was attended to in the emergency department or other hospital departments such as radiology or neurology.

Discussion related to the possible diagnoses.

Final diagnosis, treatment, prognosis, and follow-up.

Remember to indicate numbered citations within the body of the text and include a complete list of corresponding literature/references at the end of the manuscript. (Do not use any citation management programs or unlink them.) 

Limit references to 25. No references (unless it is a seminal study) can be older than 10 years.

We prefer primary research as references, but some cases are so obscure that authors will need to pull from a variety of sources. However, 

. Be advised that peer reviewers are adamant that the disease/disorder you describe was actually diagnosed and not determined by index of suspicion on the basis of ruling out various differentials. We use AMA11 as our publication style, which uses superscript citation numbers and a corresponding numbered reference list. Please create your citations and references in this style.  Check this recent article posted online at 

https://www.contemporarypediatrics.com/view/the-rx-of-adhd

 for examples of reference style. IMPORTANT NOTE WITH AMA 11TH EDITION: PLEASE PUT DOI OR WEBSITES/URLS AT THE END OF THE REFERENCE LINE.

When you send your draft manuscript, also 

. These image files must be high-resolution jpg or tiff files (minimum of 300 dpi) and as large in size as possible. We suggest a minimum of 7 horizontal inches. The images must be original photos with clear permissions to use, not images from copyrighted sources. Send as separate attachments with your e-mail submission; do not embed images into your manuscript document.

After we receive your manuscript, our editors and peer reviewers will review your draft and let you know if we accept your submission for publication. 

Puzzler is one of the departments for which we receive the most submissions, so it may be several months after submission before you receive feedback from us.

If we do accept your submission for publication, we will contact you with further instructions.

Send your submissions in Microsoft Word format to 

, via e-mail to mpetronelli@mjhlifesciences.com

Guidelines for PUZZLER, Contemporary Pediatrics

 poll. Take a look at the following case below. After reading through the description, choose a multiple-choice answer and try to guess the correct patient diagnosis.

Then, visit our website on July 9, at 12:00 PM EST or later for the full case presentation, differential diagnosis, and correct patient diagnosis. 

This case was provided by Drashti Patel, BS, BA, and Jyoti Budania, MD.

In November 2023, an otherwise healthy 11-year-old boy presented to the clinic with the chief complaint of testicular discomfort. He reported mild testicular pain that worsened with physical activity, and he denied the presence of dysuria, urinary urgency, or frequency. He was recently evaluated by ENT for an episode of epistaxis, which was benign and resolved without requiring cauterization. His medical history was otherwise unremarkable, notable only for molluscum contagiosum at5 years of age and a few episodes of streptococcal pharyngitis and otitis media.

His vital signs in clinic were within normal limits, and the only additional finding at this time was a nontender, nonpruritic, and nonpalpable petechial rash on the bilateral lower extremities. His mother observed that the rash appeared to fluctuate with his activity level, worsening during periods of increased stress or activity.

Given the presence of petechiae, an initial workup was initiated, including a complete blood count (CBC), comprehensive metabolic panel (CMP), prothrombin time (PT), and partial thromboplastin time (PTT). A point-of-care urinalysis performed in the clinic revealed traces of blood in the urine. The patient appeared well and did not show any other signs of illness. He was diagnosed with viral epididymitis while pending laboratory results. He was advised to remain hydrated and to return for follow-up if his symptoms persisted or worsened. His mother agreed with this plan and committed to closely monitoring his rash.

Over the following week, he returned to our clinic. His rash had progressed, spreading to his thighs, buttocks, and the distal shaft of his penis. All of his previous labs were within normal limits, and additional workup was initiated, including a platelet function assay and measurements of serum IgA, C3, and C4 levels, along with a repeat urinalysis.

Below, take your best guess at diagnosing this patient

Idiopathic thrombocytopenic purpura (ITP)

Now, click here for the full case presentation, differential diagnosis, and correct patient diagnosis. 

Thank you for taking this Contemporary Pediatrics poll! Want more puzzler case studies?

Can you diagnose this patient? Take our poll and find out! Then check back for the full case, differential diagnosis, and correct diagnosis.

News

Case Studies

Can you diagnose this 11-year-old with a petechial rash?

 poll. Take a look at the following case below. After reading through the description, choose a multiple choice answer and try to guess the correct patient diagnosis.

on Monday, January 6 at 12:00 PM ET for the full case presentation, differential diagnoses, and the correct patient diagnosis. 

This case was provided by Amar Davé, MD, FAAP and Pahroul Davé, APRN

A boy aged 10 years presented to the outpatient office with a history of painful nodules on the plantar surface of his bilateral feet 8 to 10 hours after spending time in a hot tub. He was unable to bear weight or put on socks and shoes due to his pain. The photos were taken soon after the painful and red papules appeared. The lesions affected the whole plantar aspect of both feet. Over the following 4 days, the nodules became less painful and red. 

Medical advice was sought on the fifth day of symptoms, and by this time, the child was improving clinically. He was stable with subcutaneous, mildly painful, fleshy nodules mostly populating the medial arch of the foot. His remaining clinical examination results were within a normal range. Further questioning of the child’s mother revealed that other children exposed to the hot tub experienced painful feet but without lesions. 

Due to the patient’s improving symptoms and the self-limiting nature of the illness, no tests or labs were ordered as the child was not acutely ill. No peer consultations or specialists were utilized.

Click here for the full case presentation, differential diagnoses, and the correct patient diagnosis, in a separate article.

The photos in this case were taken soon after the painful and red papules appeared.

Can you diagnose this boy with painful nodules on his feet?

This case was presented by Rutva Vora, BS; and Monica Guirguis, DO.

A 2-month-old female was born after an uneventful pregnancy at 40 weeks’ gestation via vacuum-assisted vaginal delivery to a G2P1011 female. The patient’s APGAR scores were 7 and 9 at 1 and 5 minutes, respectively, at birth. No bleeding or other complications were reported during delivery. The newborn and mother were discharged two days after delivery without requiring NICU stay or interventions. The infant briefly developed a small soft palpable scalp swelling that resolved within days after delivery. The patient followed an otherwise uncomplicated growth progression since birth. She did exhibit mild reflux symptoms, which were managed with supportive care measures. Physical examination after delivery and subsequent exams revealed no abnormalities, including no signs of scalp swelling or injury.

At 8 weeks of age, the patient presented to the Emergency Department with a 3-day history of new-onset scalp swelling. The parents decided to seek medical attention after the swelling became noticeably enlarged. Parents denied any changes in her mental status, vomiting, fevers, lethargy, irritability, or any other new concerns. She did have symptoms of gassiness and fussiness that were unchanged from baseline. No history of trauma was reported, and there were no concerning signs suggestive of nonaccidental trauma. The patient appeared well, with a soft, fluctuant palpable subcutaneous fluid collection overlying the parieto-occipital scalp, without crossing suture lines. The anterior fontanelle was soft and non-bulging, and there was no hemotympanum.

Bleeding disorder (e.g. Von Willebrand Disease)

Diagnose this 2-month-old with scalp swelling

 poll. Take a look at the following case below. After reading through the description, choose a multiple choice answer and try to guess the correct patient diagnosis. 

 on Wednesday, January 29 at 12:00 PM ET for the full case presentation, differential diagnoses, and the correct patient diagnosis. 

This case was provided by Nicholas W. Kieran, MS and Annuradha Goel, MD.

A 14-year-old girl presented to her primary care office with 2 weeks of vomiting that began when she tried to eat breakfast. She said she was feeling well up until that point, but then developed sudden onset vomiting and constant, 7/10, non-radiating chest pain centrally located at about the level of the second rib that remained unchanged since onset and slightly worsened when trying to eat. 

She was able to take in liquids but vomited all food, despite having an appetite. She denied feeling the food get stuck in her throat and endorsed continued vomiting of meals within 2 minutes of eating. She denied blood in the vomit and denied any abdominal pain. 

Urination was unchanged, and stools, although infrequent because of a lack of eating, continued to have their normal consistency and color. The patient did endorse some mild shortness of breath. This started around the same time as the other symptoms, but did not find it very bothersome. Her last sexual encounter was 3 months prior to this visit, just prior to Nexplanon (etonogestrel implant) insertion. Her last menstrual period was 2months prior to the visit.

On review of systems, she did not endorse palpitations, syncope, lightheadedness. She had increased her vape use recently but did not disclose when she started or how much she vaped. She had no recent travel and had not identified any extremity swelling. She was unsure if she had lost weight but had not been trying to lose any.

website on Wednesday, January 29, 2025, at 12:00 PM ET or later for an article featuring the full case presentation, differential diagnosis, and correct patient diagnosis.

The patient had increased her vape use recently, but did not disclose when she started, or how much she vaped. 

14-year-old girl presents with chest pain, 2-week history of vomiting

This case was presented by Giridhar Guntreddi, MD FAAP, FAPHM; Achuth Jayasankar Kondoor, Taylor Boske, Neelima P. Theella, MD, and Jayasree Vasudevannair, MD MPH FAAP. 

A healthy 12-month-old girl presented with one small skin lesion over the right heel (Image 1) for one month. On examination, her right lateral heel showed a round, white, pearl-like, hard, tiny lesion with a smooth appearance without any redness or itching. The patient's mother denied any pain, swelling, itching or fever. No significant travel, bites, heel stick injuries were reported in the history. No systemic symptoms suggested any underlying systemic diseases. The infant is closely monitored at subsequent well visits and re-checked. After 3 months, the child showed full resolution of the skin lesion over the heel area (Image 2).

Below, take your best guess at diagnosing this patient.

click here for the full case presentation, differential diagnosis, and correct patient diagnosis. 

Thank you for taking this Contemporary Pediatrics poll! Want more puzzler case studies? 

Sherlita Amler

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