
What Causes Tingling Sensation In The Mouth And Rapid Heart Rate?

Low dose benzodiazepines can help.
Detailed Answer:
Hi, thanks for asking from HCM
I can understand your concern. You are taking Quetiapine, Lamotrigine and Vyvanse for years. Are you still taking these medicines? Because Vyvanse, Lamotrigine both are known to cause weird feeling in head and face.
The symptoms like weird tingling feeling in mouth, tingling and feeling as if forehead is on fire, rapid heart rate etc could occur due to a number of reasons. Medical causes like Vitamin B12 deficiency, altered thyroid hormone levels especially in hyperthyroidism etc are possibilities. Please get your thyroid hormone levels and B12 levels done to rule out these medical causes.
Other possibility is anxiety. You are already on psychoactive medicines and possibility of anxiety is also there. Rapid heart beat, weird sensation in mouth, forehead etc can be symptoms of anxiety.
Low dose benzodiazepines like Clonazepam or Lorazepam can help to reduce the symptoms. You can talk with your doctor for the drugs.
Thanks, Take care

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