What is a disease called snake and scorpion?

There is a folk legend: there is a skin disease called "snake pill", which is the embodiment of snake, constantly pestering human beings, crawling slowly in human skin, winding aside, and the skin is broken, blistered, burst and oozing everywhere, and the pain is unbearable; Once wrapped around the whole body, it can kill people.

The legendary "snake pill" does exist, which is herpes zoster, a common skin disease.

The culprit of human herpes zoster is a pathogen called varicella zoster virus, which only exists in human body and attacks human beings. The virus in the rash blister fluid and upper respiratory tract nasopharyngeal secretion produced by the patient's illness is hidden in one or more neurons of human spinal nerve or sensory ganglion through direct contact and air transmission, like Pandora's box, which lurks for a long time. Under the action of some stimulating factors, human immunity is reduced, Pandora's box is opened, and the latent virus moves again, causing inflammation and necrosis of ganglion, resulting in neuralgia and skin infection. At the initial stage of herpes zoster infection, there may be mild fever, fatigue, local lymph node swelling and pain, skin allergy or paroxysmal neuralgia. The disease develops along its inherent law, resulting in local skin flushing, and papules and papules the size of millet to soybean are distributed along the nerves, which rapidly evolve into blisters, bullae or blood blisters, and gradually increase and merge into pieces. Part of herpes bursts and oozes, and secondary infection of herpes produces pustules and gangrene. The pain is getting more and more severe, which can be manifested as persistent burning sensation, acupuncture and knife cutting sensation and electric shock sensation, day and night. Some normal and harmless stimuli, such as clothes touching the skin, can also cause severe pain. After 2 ~ 4 weeks, most of the patients' diseases will stop by themselves, and the patients can get lifelong immunity with almost no recurrence. However, there are still a considerable number of patients with herpes zoster lasting for more than 2 months, and some even last for several years, which is related to the patient's age and general immune status.

For uncertain sudden pain, in addition to continuing the necessary examination, remember to be alert to "snake and scorpion". "Snake pill" is not terrible, but early diagnosis and early quality should not be careless.