Many things: Genetics, smoking, high caffeine intake (energy drinks), drugs (cocaine for example, anxiety, pheochromocytoma, thyroid disease, renal disease, etc. Etc. The point being, there are many possible causes. Have the 18yo assessed and treated after a full evaluation and proper diagnosis takes place and they should do well. Best wishes.
Answered 12/10/2013
5.2k views
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question