Can formaldehyde poisoning cause nosebleeds?

Jun 20, 2025 Source: Cainiu Health

Dr. Lu Cheng

Introduction

In cases of mild formaldehyde poisoning, the body typically exhibits symptoms such as dry eyes, coughing, and skin itching. At this stage, the nasal mucosa experiences mild inflammation due to formaldehyde irritation. Nosebleeds generally do not occur directly, but nasal dryness and slight discomfort may be present. If exposure to the formaldehyde environment is promptly discontinued, symptoms may gradually subside. In severe formaldehyde poisoning, large amounts of formaldehyde enter the body, causing intense irritation to the nasal mucosa.

Formaldehyde poisoning may cause nosebleeds, as formaldehyde irritates the respiratory mucosa, and in severe cases, it can damage the blood vessels in the nasal cavity. If any abnormalities occur, prompt medical attention is recommended. Detailed analysis is as follows:

In cases of mild formaldehyde poisoning, the body often exhibits symptoms such as dry eyes, coughing, and itchy skin. At this stage, the nasal mucosa experiences mild inflammation due to formaldehyde irritation. Nosebleeds typically do not occur directly, but individuals may feel nasal dryness and slight discomfort. Symptoms can gradually subside if exposure to formaldehyde is promptly avoided.

In severe formaldehyde poisoning, large amounts of formaldehyde enter the body, strongly irritating the nasal mucosa, causing congestion, edema, or even erosion, which can lead to rupture of nasal blood vessels and subsequent nosebleeds. This may also be accompanied by severe coughing, difficulty breathing, dizziness, and headaches. If not treated promptly, it can lead to more serious health complications.

After formaldehyde exposure, it is essential to immediately leave the contaminated environment and open windows for ventilation. If nosebleeds or other symptoms occur, seek medical attention promptly. After home renovation, ensure adequate ventilation and use qualified environmentally friendly materials to prevent excessive formaldehyde levels and reduce the risk of poisoning.

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