An allergic reaction to toothpaste.
D003802:Dentifrices / Q000009:adverse effects*; D005557:Formaldehyde / Q000009:adverse effects*; D005882:Gingival Diseases / Q000139:chemically induced*; D006801:Humans; D006967:Hypersensitivity / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D012882:Skin Tests; D014100:Toothpastes / Q000009:adverse effects*
D003802:Dentifrices; D014100:Toothpastes; D005557:Formaldehyde