What causes blood crusts in the nose during the late stages of pregnancy, and what should be done about it?

Nov 27, 2025 Source: Cainiu Health

Dr. Zhang Lu

Introduction

In general, blood crusts in the nose during the late stages of pregnancy may be caused by dry nasal mucosa, hormonal changes, rhinitis, sinusitis, or deviated nasal septum. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. Medication use during late pregnancy requires special caution, and all medications should only be used after evaluation by a physician. Maintain good indoor ventilation in daily life.

Generally, blood crusts in the nose during late pregnancy may be caused by dry nasal mucosa, hormonal changes, rhinitis, sinusitis, or deviated nasal septum. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. Specific analysis is as follows:

1. Dry Nasal Mucosa

Dry environmental conditions or insufficient water intake during late pregnancy can lead to rapid moisture loss from the nasal mucosa, making capillaries prone to rupture and bleed. The dried blood then forms crusts. Use a humidifier indoors to maintain humidity, drink at least 1,500 mL of water daily, use saline nasal sprays to moisten the nasal passages, and avoid picking the nose.

2. Hormonal Changes

Elevated estrogen levels in late pregnancy cause nasal mucosal blood vessels to dilate and become congested, increasing vessel wall fragility and the risk of bleeding and subsequent crust formation. Ensure adequate rest, maintain a light diet avoiding spicy and irritating foods, wear a mask outdoors to reduce external irritation, and apply medical-grade petroleum jelly when the nasal cavity feels dry.

3. Rhinitis

Rhinitis triggered by allergens or viral irritation causes inflammation, congestion, and swelling of the nasal mucosa, which can easily break and bleed, forming crusts. Under medical guidance, physiological seawater nasal sprays, budesonide nasal spray, or loratadine tablets may be used. Avoid exposure to allergens such as pollen and dust mites.

4. Sinusitis

Infection-induced inflammation of the sinus mucosa leads to secretions that irritate the nasal lining, causing erosion, bleeding, and crust formation. Under medical supervision, amoxicillin capsules, mometasone furoate nasal spray, and eucalyptus cineole-pinene enteric soft capsules may be prescribed. Perform daily nasal irrigation with saline solution.

5. Deviated Nasal Septum

An anatomical abnormality where the nasal septum is displaced to one side results in thin mucosa at the curved site, which is vulnerable to airflow irritation, leading to damage and bleeding that forms crusts. Conservative care is preferred during late pregnancy—moisten the nasal cavity with saline solution and avoid forceful nose-blowing. If recurrent bleeding persists after delivery, septoplasty may be considered at a later stage.

Medication use during late pregnancy requires special caution; all drugs must be used only after physician evaluation. Maintain good indoor ventilation daily, avoid dry or polluted environments, and increase dietary intake of vitamin C-rich fruits and vegetables. Seek prompt medical attention if nasal crusts frequently recur or are accompanied by significant nosebleeds to determine the underlying cause.

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