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Postherpetic neuralgia (PHN) is neuropathic pain that occurs due to damage to a peripheral nerve caused by the reactivation of the varicella zoster virus (herpes zoster, also known as shingles). PHN is defined as pain in a dermatomal distribution that lasts for at least 90 days after an outbreak of herpes zoster. [ 1 ]
Zoster ophthalmicus occurs in approximately 10% to 25% of cases. In some people, symptoms may include conjunctivitis, keratitis, uveitis, and optic nerve palsies that can sometimes cause chronic ocular inflammation, loss of vision, and debilitating pain. [28] Shingles oticus, also known as Ramsay Hunt syndrome type II, involves the ear.
Compression neuropathy; Congenital distal spinal muscular atrophy; Congenital facial diplegia; Color blindness; Cornelia de Lange syndrome; Corticobasal degeneration; Cotard delusion; Cranial arteritis; Craniosynostosis; Creutzfeldt–Jakob disease; Cumulative trauma disorders; Cushing's syndrome; Cyclic vomiting syndrome; Cyclothymic disorder
1 in 3 Canadians will experience shingles at some point in their lifetime.
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Unlike typical neuralgia, this form can also cause pain in the back of the scalp and neck. Pain tends to worsen with talking, facial expressions, chewing, and certain sensations such as a cool breeze. Vascular compression of the trigeminal nerve, infections of the teeth or sinuses, physical trauma, or past viral infections are possible causes ...
The treatment of peripheral neuropathy varies based on its cause, and treating the underlying condition can help neuropathy treatment. When peripheral neuropathy results from diabetes mellitus or prediabetes, blood sugar management is key to treatment. In prediabetes, strict blood sugar control can significantly alter the course of neuropathy. [31]
Causes of formication include normal states such as onset of menopause (i.e. hormone withdrawal). Other causes are medical conditions such as pesticide exposure, [3] mercury poisoning, diabetic neuropathy, skin cancer, syphilis, Lyme disease, hypocalcaemia, or herpes zoster (shingles) and neurocysticercosis. [2]