Concomitant occurrence of Wernicke's encephalopathy and sarcopenia due to vitamin D depletion in patients with alcohol use disorder: a case report.

Individuals with alcohol use disorder frequently suffer from vitamin D deficiency, in addition to deficiencies in vitamins B12, folic acid and B1. This is due to inadequate dietary intake and behavioural changes. Each of these deficiencies results in different clinical symptoms. Subacute spinal cord degeneration, together with radicular and sensorimotor peripheral neuropathy, arises from B12 vitamin and folic acid deficiencies. B1 vitamin deficiency leads to Wernicke's encephalopathy, which can include the classical triad of symptoms (i.e. cognitive changes, ataxia and ophthalmoplegia). Sarcopenia is a consequence of a long-term deficiency of vitamin D. This current case report describes a 43-year-old female patient with alcohol use disorder who complained of dizziness, postural disturbance and episodes of intermittent paraesthesia. She was subsequently shown to have concomitant Wernicke's encephalopathy and sarcopenia due to vitamin D deficiency. This case report presents the diagnostic process undertaken to exclude conditions related to ataxia and paraparesis other than vitamins D and B1 deficiencies. It also emphasizes the importance of concomitant replacement of the depleted vitamins because the vitamin deficiency may occur simultaneously, which causes the accompanying manifestations of several clinical syndromes.