“…oral trauma, contact hypersensitivity, sodium lauryl sulfate), nutritional deficiencies (iron, vitamin B12, folic acid), medications (angiotensin converting enzyme inhibitors, gold salts, phenobarbital, diclofenac, piroxicam), inflammatory bowel disease (gluten-sensitive enteropathy, Crohn's disease, ulcerative colitis), certain foods (tomatoes, nuts, cocoa, dairy, spices), or a hormonal context with progesterone deficiency in females. RAS is also correlated with a genetic predisposition (3,8,39).…”