- Infantile beriberi – Presents at 2-3 months of age with cardiomegaly, tachycardia, cyanosis, dyspnea, vomiting, and a loud, piercing cry with symptoms secondary to formula lacking thiamine.
- Adult beriberi, dry – Symmetrical distal extremity peripheral neuropathy characterized by both sensory and motor impairment.
- Adult beriberi, wet – Neuropathy plus evidence of cardiac involvement with cardiomegaly, cardiomyopathy, congestive heart failure, and peripheral edema.
- Wernicke-Korsakoff syndrome – Wernicke encephalopathy is a triad of nystagmus, ophthalmoplegia, and ataxia with associated confusion often found in people with alcohol use disorder who have chronic thiamine deficiency. Korsakoff syndrome refers to the chronic neurologic condition of impaired short-term memory loss and confabulation that is a result of Wernicke encephalopathy.
- Leigh syndrome – A mitochondrial disorder of progressive subacute necrotizing encephalomyopathy of infancy associated with thiamine deficiency.
E51.11 – Dry beriberi
E51.12 – Wet beriberi
36656008 – Beriberi
- Hyperthyroidism / thyrotoxicosis
- Cardiomyopathy secondary to diabetes, alcohol, or other etiologies
- Liver failure
- Severe anemia
- Other causes of high-output heart failure
- Psychiatric disease (delusions, schizophrenia, schizophreniform disorder, etc)
- Delirium tremens
- Structural diseases in the medial thalami, hippocampi, or inferior medial temporal lobes such as top-of-the-basilar stroke, hypoxic-ischemic encephalopathy after cardiac arrest, herpes simplex virus encephalitis, and third ventricular tumors