Despite the common names ringworm and dermatophyte, the disease is caused by a fungus, not a worm or plant. Trichophyton, Microsporum, and Epidermophyton are the most common genera that cause ringworm in humans. These organisms feed on keratin, the major structural component of hair, skin and nails.
Thuja occidentalis 'Nigra'. Naturally broad, pyramidal evergreen shrub displays deep green, scalelike needles arranged in flat sprays. New light green needles emerge in spring, deepening in color as they mature. Deep green color adds contrast to winter landscape.
Severe deficiency, called pellagra, can cause symptoms related to the skin, digestive system, and nervous system. They include: 1  thick, scaly pigmented rash on skin exposed to sunlight. 2  swollen mouth and bright red tongue.3  vomiting and diarrhea. 4  headache. 5  apathy. 6  fatigue. 7  depression.8  disorientation.our liver can convert tryptophan from high-protein foods like meats and milk into niacin. Symptoms of mild niacin deficiency include: 1  indigestion. 2  fatigue. 3  canker sores. 4  vomiting. 5  depression.