Apple, Fix, iPhone, iPhone 6 Plus, iSight, iSight Camera. 1  This actually has been affecting my phone. 2  Hmm, are they really only going to open up the device and replace the camera, or is it going to be a device swap. 3  Just checked and my 6+ and my brothers are affected.
Pellagra is a vitamin deficiency disease most frequently caused by a chronic lack of niacin (vitamin B 3 or synonym: vitamin PP (from: Pellagra Preventing factor)) in the diet.ellagra is a vitamin deficiency disease most frequently caused by a chronic lack of niacin (vitamin B 3 or synonym: vitamin PP (from: Pellagra Preventing factor)) in the diet.
Pathophysiology. Pellagra is the late stage of severe niacin deficiency. Niacin, or vitamin B-3, is a water-soluble vitamin. In 1926, Goldberger reported that nicotinamide was a preventive factor of pellagra.Pellagra can be divided into primary and secondary forms.ackground. Pellagra is clinically manifested by the 4 D' s: photosensitive dermatitis, diarrhea, dementia, and death. The full tetrad of symptoms is usually not well developed in infants and children. This vitamin deficiency responds to treatment with nicotinic acid.