Red and swollen gums in a one-and-a-half year old baby can be caused by gingivitis or apical inflammation, or viral gingivostomatitis due to a viral infection.
Gingivitis is the irritation of food debris or soft tartar around the teeth that causes the gums to be red and swollen, bleed from brushing or leave blood from eating. The redness and swelling of the gums can be relieved by removing the irritants around the gums.
Gums redness and swelling after inflammation of the dental nerve requires dental treatment to remove infected material from the roots of the teeth, and gums redness and swelling can go away after medication is applied to the roots for relief.
Viral gingivostomatitis in the oral cavity manifested as red and swollen gums, not a single tooth but all of the red and swollen gums, you can take oral antiviral medication, systemic symptoms disappear after the redness and swelling of the gums will also disappear, but also can be localized application of iodine glycerin.
Therefore, one and a half year old baby gums red and swollen and gingivitis or apical inflammation related, may also be a manifestation of viral gingivostomatitis. Need to go to the stomatology department for medical treatment. Drugs should be used under the guidance of a physician.