Myiasis in humans is a parasitic infection caused by fly larvae (maggots) that infest living or necrotic (dead) tissue.
Here's a more detailed breakdown:
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The Basics: Myiasis occurs when fly larvae, commonly known as maggots, invade the skin, wounds, or other body orifices of humans. These larvae feed on the host's tissue.
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How it Happens: Flies deposit their eggs or larvae on or near open wounds, sores, or even healthy skin. The larvae then hatch and begin to burrow into the tissue.
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Risk Factors: Certain conditions increase the risk of contracting myiasis:
- Open wounds: Flies are attracted to the odor of open wounds, making them ideal sites for egg-laying.
- Poor hygiene: Neglecting personal hygiene and wound care increases susceptibility.
- Debilitated individuals: People who are bedridden, elderly, or have underlying health conditions are more vulnerable.
- Tropical and subtropical regions: Myiasis is more common in warmer climates where flies are more abundant.
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Types of Myiasis: Myiasis can manifest in different forms depending on the fly species and the location of the infestation:
- Cutaneous Myiasis: Affects the skin, often presenting as painful, boil-like lesions.
- Wound Myiasis: Occurs in open wounds, where larvae feed on necrotic tissue.
- Nasal Myiasis: Affects the nasal passages.
- Ocular Myiasis: Affects the eyes.
- Auricular Myiasis: Affects the ears.
- Urogenital Myiasis: Affects the urogenital area.
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Symptoms: Symptoms vary depending on the type and location of the myiasis, but can include:
- Pain
- Itching
- A sensation of movement under the skin
- Visible larvae in the affected area
- Discharge from wounds
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Treatment: Treatment typically involves:
- Manual removal of larvae: Healthcare professionals carefully remove the maggots from the affected tissue.
- Wound care: Thorough cleaning and disinfection of the wound are essential.
- Oral or topical medications: In some cases, medications may be prescribed to kill remaining larvae.
Myiasis is a parasitic infection by fly larva, or maggots, in human tissue, typically occurring in tropical and subtropical regions, and those with untreated or open wounds have a higher risk.
