PELLAGRA By N., Sam M.S. - 6 noun. an insufficiency of the B vitamin nicotinic acid, characterized by weakness, gastrointestinal disruptions, skin ailments, and neurological indicators. Commonly referred to as nicotinic acid deficiency. PELLAGRA: "The patient is suffering from pellagra." Related Psychology Terms PELLAGRINOUS PSYCHOSIS LEGAL PSYCHIATRY (Forensic Psychiatry) EXPERIENTIAL THERAPY SULLIVAN, HARRY STACK (1892- 1949) CLINICAL PSYCHOLOGY OBJECT RELATIONSHIP BERI BERI EPILEPSY (Symptoms and Types) KORSAKOFF’S SYNDROME (Amne- sic-Confabulatory Syndrome) REHABILITATION (Psychiatric) Cite this page: N., Sam M.S., "PELLAGRA," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/pellagra/ (accessed May 28, 2022).