Shingles occurs in the spring and summer months, and the recent change in seasons is a trigger for a high incidence of the disease. Herpes zoster can be harmful and can lead to other diseases if the disease is not treated for a long time. So what are the risks of shingles? What can we do to prevent shingles? What are the dangers of shingles? 1, herpes local breakage may be complicated by bacterial infection: if herpes zoster lesions occur in special areas, such as the eye, it may lead to serious consequences. In case of secondary bacterial infection, it can cause full ophthalmia and even meningitis; after the disease, there are sequelae such as loss of vision, blindness and facial paralysis. Herpes zoster in the head is mostly found in the anterior part of the head, where the first branch of the trigeminal nerve is located, and can cause hair loss and permanent scarring. Pain can persist for some time after the herpes zoster skin damage has healed. In some elderly patients, the neuralgia can last for months or years. 2. May cause inner ear dysfunction: Herpes zoster that occurs in the auricle and ear canal can cause symptoms of inner ear dysfunction. Patients show dizziness, nausea, vomiting, hearing impairment, nystagmus, etc. 3, may induce keratitis, corneal ulcers, conjunctivitis: Herpes zoster can occur in the trigeminal nerve segment of the face, there is a nerve fiber in the trigeminal nerve, namely the ophthalmic nerve fiber, part of the nerve fiber distribution in the human eye cornea, conjunctiva and even the entire eye, the nerve fiber in this area if infected by the herpes virus, can occur keratitis, corneal ulcers, conjunctivitis, patients can occur photophobia, lacrimation The patient may suffer from photophobia, lacrimation, eye pain, resulting in loss of vision, or in severe cases, total uveitis leading to blindness. When the herpes virus infects the motor nerve fibers in the facial nerve, facial palsy can occur. The affected eye cannot close, the facial expression on the affected side is dull, the corner of the mouth is skewed to the healthy side, and the blowing motion cannot be done. 4. Viral encephalitis and meningitis may occur: When the herpes virus invades the central nervous system, i.e. the brain parenchyma and meninges, from the nerve roots at the spinal cord upwards, viral encephalitis and meningitis may occur, manifesting as severe headache, jet-like vomiting, convulsions, limb convulsions, and life-threatening confusion and coma. When the herpes virus invades visceral nerve fibers from the nerve roots at the spinal cord into the body, it can cause acute gastroenteritis, cystitis, and prostatitis, manifested as abdominal cramps, difficulty urinating, and urinary retention.