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 of niacin (which is usually associated with malnutrition, or starvation) causes t â¦ he disease pellagra. The main symptoms of untreated pellagra are the 4 D's: Diahrrea, dermatitis (red sores or itching), dementia and death.