How is it that red spots appear on the body after acupuncture?

The general situation is alcohol allergy, which is a common cause of rash or red spots after acupuncture, but it is usually found at that time, and you also said that acupuncture is in the waist, which should have nothing to do with acupuncture. In addition, it is also likely to be neurodermatitis, which mostly occurs in the limbs, and has nothing to do with acupuncture, and is often related to the patient's mood and weather, especially in spring when the weather is humid and the mood is bad.

Of course, it is also possible that there is a special reaction at the corresponding position of the meridians after acupuncture, similar to the appearance of red lines or pitching under the skin.

It is recommended to see a dermatologist. thank you

There is no need to overemphasize the reasons of acupuncture. If you have questions, you can consult online, but it is not the root of solving the problem. If it's really serious, you can communicate with the doctor who pricked the needle first and ask for his advice. Or go directly to the hospital.

Two weeks ago, I met an elderly female patient in the clinic. The neck pain involved her right hand, and her right hand and neck were injected. But the next day, her left hand grew a lot of red spots and even began to itch. Later, the teacher judged that she was neurodermatitis, and finally transferred to the dermatology department for diagnosis.