5 months baby tongue with red spots can be seen in normal people, may also be trauma, papillitis and other causes. 1. trauma: 5 months old baby in the stage of tooth eruption, teeth friction tongue will cause tongue with red spots, can be recovered on their own, when there is swelling, pus should be timely medical attention. 2. Tongue papillitis: 5 months baby tongue with red spots may also be caused by tongue papillitis, the child will also have a swollen tongue, crying, tongue raised folds and other symptoms. 3. Physiological conditions: normal children after a long period of time without water may be due to lack of water appear tongue red spots, such people are often accompanied by dry stools, should drink more water, usually without special treatment. 5 months baby tongue red spots, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.