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Morning Sickness – Causes, Symptoms & Relief

Morning sickness is a common early pregnancy symptom involving nausea and vomiting, often occurring in the first trimester. It affects up to 80% of pregnant women.

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Things worth knowing about "Morning sickness"

Morning sickness is a common early pregnancy symptom involving nausea and vomiting, often occurring in the first trimester. It affects up to 80% of pregnant women.

What is Morning Sickness?

Morning sickness refers to nausea and vomiting that commonly occur during the first trimester of pregnancy. Despite its name, morning sickness can strike at any time of day or night. It typically begins around week 6 of pregnancy and resolves for most women by weeks 12 to 14.

Causes

The exact causes of morning sickness are not fully understood, but several factors are believed to play a role:

Hormonal changes: A rapid rise in the pregnancy hormone hCG (human chorionic gonadotropin) and increased estrogen levels are considered the primary triggers.
Slower digestion: Progesterone relaxes the muscles of the digestive tract, slowing gastric emptying and contributing to nausea.
Genetic predisposition: Women with a family history of morning sickness are more likely to experience it themselves.
Psychological factors: Stress and emotional strain can worsen symptoms.
Multiple pregnancies: Women carrying twins or triplets tend to experience more severe symptoms due to higher hCG levels.

Symptoms

The typical symptoms of morning sickness include:

Nausea, especially in the morning or on an empty stomach
Vomiting, which may occur occasionally or multiple times per day
Increased sensitivity to certain smells or foods
Excessive saliva production
Fatigue and general discomfort

Hyperemesis Gravidarum

In rare cases, morning sickness can develop into a severe condition known as hyperemesis gravidarum. This involves persistent, severe vomiting that can lead to dehydration, significant weight loss, and malnutrition. This condition requires medical treatment and sometimes hospitalization.

Diagnosis

Morning sickness is usually diagnosed clinically, based on the symptoms described and the medical history. To rule out other causes of nausea and vomiting, a healthcare provider may order:

Blood tests (checking hCG levels, electrolytes, liver and kidney function)
Urine tests (detecting ketones, which indicate dehydration or malnutrition)
Ultrasound to rule out multiple pregnancies or other underlying causes

Treatment and Tips

In most cases, morning sickness is self-limiting and does not require medical treatment. The following measures can help relieve symptoms:

General Measures

Eat small, frequent meals to avoid an empty stomach
Choose dry, easily digestible foods such as crackers or toast
Stay well hydrated by sipping fluids throughout the day
Avoid trigger smells and foods
Keep crackers by the bedside and eat one before getting up in the morning
Get fresh air and engage in light physical activity

Natural Remedies

Ginger: Ginger tea or ginger capsules can help reduce nausea. Studies support moderate effectiveness.
Acupressure: Wearing acupressure wristbands targeting pressure point P6 may provide relief for some women.
Vitamin B6 (pyridoxine): Increased intake of vitamin B6 has been shown to reduce nausea and is recommended by healthcare providers.

Medical Treatment

For severe or persistent nausea, medical treatment may be necessary. Antiemetics (medications that prevent nausea and vomiting) are used during pregnancy only under medical supervision. Options include doxylamine/vitamin B6 combinations or, in more severe cases, metoclopramide or ondansetron.

When to See a Doctor

The following warning signs should always be assessed by a healthcare professional:

Severe, persistent vomiting (more than 3-4 times per day)
Significant weight loss
Signs of dehydration (dry mouth, dark urine, dizziness)
Nausea and vomiting that do not improve after week 14 of pregnancy
Blood in vomit

References

World Health Organization (WHO) - Recommendations for the prevention and treatment of nausea and vomiting in pregnancy (2023)
American College of Obstetricians and Gynecologists (ACOG) - Practice Bulletin No. 189: Nausea and Vomiting of Pregnancy (2018, reaffirmed 2022)
Festin M. - Nausea and vomiting in early pregnancy. BMJ Clinical Evidence (2014). PubMed PMID: 25166302

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