Is spontaneous nosebleed caused by “internal heat” (a traditional Chinese medicine concept)?

Spontaneous or recurrent nosebleeds—medically termed epistaxis—are not caused by “heatiness” (a traditional Chinese medicine concept), nor is this phenomenon scientifically validated in modern medicine. Epistaxis most commonly originates from the anterior nasal septum, particularly Kiesselbach’s plexus—a richly vascularized area susceptible to trauma, dryness, or minor irritation. Common evidence-based causes include mucosal drying (especially in low-humidity environments or during winter), digital trauma (e.g., nose-picking), allergic or infectious rhinitis, hypertension, use of anticoagulants or antiplatelet agents (e.g., aspirin, warfarin, DOACs), and structural abnormalities such as nasal septal deviation.

Less common but clinically important etiologies include hereditary hemorrhagic telangiectasia (HHT), coagulopathies (e.g., von Willebrand disease, ITP), nasal tumors (benign or malignant), and systemic conditions like chronic kidney disease or liver dysfunction affecting hemostasis. In children, isolated anterior epistaxis is typically benign and self-limited; however, in adults—especially those over 50 or with recurrent unilateral bleeding—evaluation for underlying pathology is warranted.

If nosebleeds occur frequently, last longer than 20 minutes despite proper first aid (i.e., firm, sustained pressure on the soft part of the nose while leaning forward), or are accompanied by symptoms such as easy bruising, prolonged bleeding from other sites, fatigue, or weight loss, prompt clinical assessment—including nasal endoscopy, complete blood count, coagulation studies, and targeted imaging if indicated—is essential. Management focuses on identifying and addressing the root cause, optimizing nasal mucosal health (e.g., saline irrigation, humidification, topical emollients), and, when necessary, procedural interventions like cauterization or nasal packing.