Patient: Description (onset time, main symptoms, hospital visited, etc.): YY, 18 years old. Drug addiction for about 3 years onset time: every time after playing … The main symptoms: a few of the fingers are purple, red and swollen… Two days ago, the fingers of the right hand were purple, red and swollen. Today it’s the fingers of the left hand… The only numbness is in the fingertips, and if you straighten them, it’s as if you’ve pulled a tendon, and you feel a tingling sensation. Hospital: I have not seen a doctor. I would like to ask a doctor if there is something wrong with my body. The actual fact is that you can find a lot of people who have been in the business for a long time, and you can also find a lot of people who have been in the business for a long time. Methamphetamine is extremely damaging to the body, so please love yourself and stop using it as soon as possible Patient: hmmmmm… Thank you Dr. Huang! I will quit as soon as possible.