Pathogenicity and Distribution: Trichophyton tonsurans is a cosmopolitan (found worldwide) dermatophyte (a fungus of skin, nails or hair). It is the etiologic agent most frequently implicated in âringwormâ infections of the scalp (Tinea capitis) in America. Causes an endothrix infection of the hair (penetrates hair shaft to grow within). T.tonsurans is anthropophilic (prefers humans to animals) however sources vary on its infectivity.
The Solanaceae, or nightshades, are an economically important family of flowering plants. The family ranges from annual and perennial herbs to vines, lianas, epiphytes, shrubs, and trees, and includes a number of important agricultural crops, medicinal plants, spices, weeds, and ornamentals.
Vegetables from the Solanaceae family produce alkaloids to ward off insects and prevent them from eating the plant. Humans can be sensitive to them as well, but many people consume nightshade vegetables without noticing any adverse effects.