OpenHealth Q&A

Concerns Over Microcephaly Diagnosis: Awaiting MRI Results

I'm a 25-year-old woman, pregnant and currently at 26 weeks, weighing 180 pounds and standing 5'4" tall. The anticipation is overwhelming as I'm waiting for an MRI scheduled in two weeks, and it's causing me significant anxiety. I've attached ultrasound images and some medical documents that include the profiles of both my boyfriend and me. Could it be that my baby's head is simply smaller than average? My boyfriend has a uniquely shaped head—his profile appears somewhat slanted—so I can’t help but question whether the ultrasound assessments were entirely accurate. Since the 20-week scan, our little one has maintained the same position, all curled up against my pelvis and facing my back. It's truly heartbreaking to feel her constant movements. I’ve heard numerous accounts of other parents learning that their infants' head sizes were measured small, yet everything turned out fine. However, I am aware that a conclusive diagnosis can’t be made based solely on these measurements; we need the MRI to determine if her brain development is typical. Two days ago, I attended an appointment with my maternal-fetal medicine (MFM) specialist, and everything feels like a whirlwind blur. Reflecting on my earlier ultrasound report, I noticed that her head was noted at the 3rd percentile during the 20-week scan, but this information wasn’t communicated to me. They indicated that due to her position, they were unable to complete the anatomy scan, suggesting I return in four weeks. Upon my return, her head circumference had plummeted to below the first percentile, along with a similar decline in her biparietal diameter (BPD). The baby's weight had decreased from the 32nd percentile to the 12th. My primary obstetrician assured me that there was no need for concern and referred me to MFM solely to finish the anatomy scan. Initially, I felt reassured after the scan, but then the doctor informed me about the possibility of microcephaly -- her head, BPD, and various other measurements had all dropped to below the first percentile. Her weight now stands at 16 percent, and they mentioned that her forehead appears sloped. They indicated she is between -3 to -4 standard deviations below average. I also met with a genetic counselor, and they collected both mine and my fiancé’s blood for testing. An amniocentesis was performed on the same day, and I'm now anxiously waiting for them to schedule the MRI appointment. The information provided was limited; they only explained that microcephaly could lead to developmental challenges, seizures, or even future difficulties with walking or speaking. The thought of my pregnancy timeline—being nearly 30 weeks by the time we receive results from the amnio—intensifies my worries. I’m still in the dark about what the MRI is intended to assess, and my next growth scan isn’t set for another month. My assumption is that it will check for normal brain development, as everything else so far appears typical except for a particular observation regarding “sub-optimal visualization” of the CSP; I’m unclear on what that entails. The stress and worry have taken a toll on my wellbeing, leading to loss of appetite and even vomiting. I recognize that this is unhealthy, especially as I’m carrying my baby girl. So far, tests for infectious diseases like Toxoplasmosis and CMV have yielded negative results. Yet, the wait for genetic testing results will take an additional two weeks, adding to my anxiety.

Answers (1)

4/1/2026, 4:29:09 AM

OpenHealth AI

I understand that you are experiencing significant anxiety as you await the MRI and genetic testing results regarding your baby’s head measurements. This situation can be incredibly overwhelming, especially with the pressures of pregnancy and the unknowns regarding your baby's health. Let’s break this down and approach it step-by-step.

Key Points:

1. Uncertainty of Diagnosis: It is important to remember that measurements like the head circumference being below average do not automatically indicate a severe condition. Other factors can contribute to these readings.
2. Monitoring Development: The MRI is likely intended to provide more detailed information about your baby’s brain development and anatomy.
3. Managing Anxiety: Taking care of your emotional well-being is essential for you and your baby.

Explanation:

Your concerns about your baby's head size and the potential for microcephaly are completely valid. While a head circumference in the lower percentiles can be a sign of developmental issues, it is crucial to wait for the MRI results before jumping to conclusions. Sometimes, head size can be influenced by genetic factors, including parents' head shapes, as well as positional factors during ultrasounds.

The "sub-optimal visualization" of the cavum septum pellucidum (CSP) could indicate challenges in assessing certain brain structures but may not correlate with developmental issues by itself.

Next Steps:

1. Focus on Mental Well-being:

   • Consider engaging in stress-relieving activities such as gentle exercise (if cleared by your doctor), prenatal yoga, meditation, or deep breathing exercises.
   • It could be helpful to talk to your partner about your feelings, or reach out to a trusted friend or family member for support.

2. Nutrition & Hydration:

   • Ensure you maintain a balanced diet, even if your appetite is low. Small, frequent meals with energy-rich foods can help. Try to include protein, healthy fats, and plenty of fruits and vegetables.
   • Stay hydrated, especially since you have experienced vomiting. sips of water or electrolyte drinks might be easier than large amounts at once.

3. Monitor Symptoms:

   • Keep track of any physical symptoms you experience, like vomiting or loss of appetite, and how they fluctuate over time. This will be helpful for your healthcare providers.

4. Stay Informed:

   • If you have specific questions about what the MRI will assess, don’t hesitate to reach out to your maternal-fetal medicine specialist for clarification. Understanding what to expect can help reduce anxiety.

5. Limit Information Overload:

   • Consider limiting time spent on forums or sources that may heighten your anxiety about the situation. Instead, focus on constructive and supportive communities.

6. Prepare for Appointments:

   • Write down questions or concerns you want addressed during your next appointments. Having a list can help ensure you communicate everything on your mind.

Lastly, it's commendable that you're actively seeking out information and support. It’s perfectly okay to feel uncertain and worried during such a critical time. Please take one day at a time, and remember that you are doing your best for both you and your baby.