January 2025 in “The International Journal of Gastroenterology and Hepatology Diseases” Vitamin B12 is crucial for hair and nerve health, and its malabsorption can cause hair loss and nerve damage.
50 citations,
November 2010 in “Otolaryngologic Clinics of North America” Recognizing oral symptoms can help diagnose and treat blood and nutritional diseases early.
3 citations,
November 2016 in “Clinical Pediatrics” A girl with Crohn's disease developed hair loss from her medication, which improved with treatment but later returned.