A sequela (UK: , US: ; usually used in the plural, sequelae ) is a pathological condition resulting from a disease, injury, therapy, or other trauma. Derived from the Latin word, meaning “sequel”, it is used in the medical field to mean a complication or condition following a prior illness or disease.A typical sequela is a chronic complication of an acute condition—in other words, a long-term effect of a temporary disease or injury—which follows immediately from the condition. Sequelae differ from late effects, which can appear long after—even several decades  after—the original condition has resolved. In general, non-medical usage, the terms sequela and sequelae mean consequence and consequences. Examples and uses
Chronic kidney disease, for example, is sometimes a sequela of diabetes; "chronic constipation" or more accurately "obstipation"  (that is, inability to pass stool or gas) is a sequela to an intestinal obstruction; and neck pain is a common sequela of whiplash or other trauma to the cervical vertebrae. Post-traumatic stress disorder may be a psychological sequela of rape. Sequelae of traumatic brain injury include headache, dizziness, anxiety, apathy, depression, aggression, cognitive impairments, personality changes, mania, and psychosis. COVID-19 is also known to cause post-acute sequelae, known as long COVID, post-COVID syndrome, or post-acute sequelae of COVID-19 (PASC). This refers to the continuation of COVID-19 symptoms or the development of new ones, four or more weeks after the initial infection; these symptoms may persist for weeks and months.
Lymphocytic meningoradiculitis, also known as Bannwarth syndrome, is a neurological disease characterized as intense nerve pain radiating from the spine. The disease is caused by an infection of Borrelia burgdorferi, a tick-borne spirochete bacterium also responsible for causing Lyme disease. Signs and symptoms
Lymphocytic meningoradiculitis is characterized by an intense spinal pain in the lumbar and cervical regions, radiating to the extremities. Symptoms may include facial paralysis, abducens palsy, anorexia, tiredness, headache, double vision, paraesthesia, and erythema migrans. Treatment
Lymphocytic meningoradiculitis is treated with antibiotics. Oral doxycycline or IV ceftriaxone are typically recommended for 14-21 days. History
The disease was first reported in 1941 by German neurologist, Alfred Bannwarth, who described the main symptoms as intense radicular pain, facial palsy, severe headaches, and vomiting. A common feature he observed in his infected patients was an abnormal increase of lymphocytes in their cerebrospinal fluid (CSF). See also
Tick-borne disease

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