<s>[INST] My 18 year old daughter is experiencing numbness of her tongue, lower lip and left cheek. She has experienced numbness of her tongue and lip before but has always gone away quickly. This time its still numb and going into the left side of her cheek. she has no known dental issues. [/INST] Hi, If there is numbness of tongue, lips and left cheek with no known dental issue can be due to causes like either Allan reaction or nerve related issue or beginning of Bells Palsy. So I would suggest you to consult a Neurophysician and get evaluated and a thorough clinical evaluation and investigations like MRI scan can help in diagnosis and treatment will be done accordingly. Resolution of the cause can help in reversing the symptoms. For nerve related problem the medications that is steroids and antibiotics are appropriate and along with it, you should also do alternate warm and cool compresses and take Vitamin Supplements. For allergies into allergic medicine like Fexofenadine or Levocetrizine and steroid shot can help. Hope I have answered your query. Let me know if I can assist you further. </s>