"Why Does Blowing on a Fan Cause Pain in the Lower Left Abdomen and Blood in Stool?"

After blowing a fan, experiencing pain in the lower left abdomen and blood in the stool may be caused by acute gastroenteritis, ulcerative colitis, intestinal polyps, or other reasons. It is recommended that patients promptly visit the Gastroenterology Department of the hospital for a definitive diagnosis and subsequent targeted treatment. Possible causes and treatments include:

1. Acute Gastroenteritis

If the abdomen is exposed to cold air while blowing a fan, it may lead to acute gastroenteritis, causing pain in the lower left abdomen. Additionally, due to inflammation, the mucous membrane may rupture and bleed, resulting in symptoms of blood in the stool. In such cases, it is necessary to promptly follow the doctor's instructions to take medications such as Bifidobacterium Triple Viable Capsules or Bifidobacterium Quadruple Viable Capsules to regulate intestinal flora, and Domperidone Tablets to promote gastrointestinal motility, thereby alleviating symptoms.

2. Ulcerative Colitis

If a patient already suffers from ulcerative colitis and their abdomen is exposed to cold air while blowing a fan, it may trigger an episode of the disease, manifesting as pain in the lower left abdomen and blood in the stool. In such cases, patients should keep warm, avoid exposing their abdomen to cold, and take medications such as Mesalazine Enteric-coated Tablets as prescribed by the doctor.

3. Intestinal Polyps

Patients with intestinal polyps have protuberant lesions on the surface of their colon mucosa. Exposure to cold air while blowing a fan may irritate these lesions, leading to bleeding in the affected tissue and subsequently causing pain in the lower left abdomen and blood in the stool. In such cases, a colonoscopy should be promptly arranged, and the polyps removed surgically.

4. Other Causes

Conditions such as bacillary dysentery or Crohn's disease can cause bacteria or other pathogens to irritate the intestinal mucosa, leading to local congestion and edema. If the abdomen is exposed to cold air while blowing a fan, it may exacerbate these symptoms, causing blood vessels to rupture and bleed, resulting in pain in the lower left abdomen and blood in the stool. It is recommended that patients undergo blood tests, stool routine tests, and other examinations under the guidance of a doctor, and if diagnosed, promptly take antibiotics such as Cefixime Tablets for anti-infective treatment as prescribed.