Fungal Diseases

• Fungal diseases, as the name implies are caused by fungi.
• The fungal diseases of man are either mycoses (caused by infection of fungi) or toxicoses (caused by toxic fungal metabolites).
Ringworm or Tinea
• Fungi belonging to genera Trichophyton, Epidermophyton and Microsporum are responsible for ringworm or tinea in man.
Mode of transmission
• The infection is generally acquired from soil or by using towels, clothes or even the comb of infected persons.
• The lesions of ringwom may form partial or complete rings.
• There are dry scaly lesions on skin, nails and scalp that cause intense itching. Heat and moisture promote growth of these fungi especially in skin folds {e.g., groin, between toes).
Prevention and treatment
• Maintaining sanitation and hygiene are the best methods of preventing these diseases.
• These can be cured by griseofulvin (orally) and miconazole (topically).
Types of ringworm (tinea)

Fungus Ringworm
Trichophyton rubrum Tinea pedis (athletes foot), onychomycosis (fungal infection of nails), tinea cruris (ringworm of groin).
T. mentagrophytes Onychomycosis, tinea corporis (ringworm of arms and legs), tinea barbae (ringworm of beard).
T. tonsurans, T. violaceun Tinea capitis (ringworm of scalp).
Microsporum canis Tinea capitis.
Epidermophyton floccusum, E. crusis Tinea cruris, tinea pedis, tinea manuum (ringworm of hands), tinea corporis, onychomycosis.
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