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Mites

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Face Mites May Be Evolving Into a Symbiotic Partnership With Humans
science7 days ago

Face Mites May Be Evolving Into a Symbiotic Partnership With Humans

New genomic work on Demodex folliculorum, the tiny facial mite living in human hair follicles, shows humans are its primary habitat and that the mite’s genome has shrunk to essentials, likely tied to a sheltered, night-time lifestyle. The study suggests these mites may be evolving from parasites toward obligate symbionts, potentially even offering benefits like keeping facial pores clear, while their limited gene pool could push them toward an evolutionary dead end. Researchers highlight unusual body features and a mating pattern that occurs at night, underscoring how intimately these mites coexist with us.

via ScienceAlert|
#demodex-folliculorum#genome-reduction#human-skin
Chigger bites decoded: how tiny mites feast on your skin and trigger brutal itching
health21 days ago

Chigger bites decoded: how tiny mites feast on your skin and trigger brutal itching

Chiggers are tiny mites that cling to clothing and transfer to skin, where six‑legged larvae release a digestive enzyme to liquefy skin and feed through a stylostome, causing intense itching after a lag of a few hours. Bites commonly appear on ankles, lower legs, backs of knees, waist and groin, with itching peaking in 24–48 hours. Treatments focus on itch relief (soap and water, calamine, cold compresses, antihistamines) and, for prevention, wear protective clothing, use insect repellent, treat garments, and avoid grassy/wooded areas in summer.

via New York Post|
#bites#chiggers#health
Your skin hosts tiny mites—and that’s usually normal.
health4 months ago

Your skin hosts tiny mites—and that’s usually normal.

Most adults carry mites like demodex on their skin; they live in hair follicles and pores, feed on skin oils and dead cells, and are typically harmless symbionts. A shift in balance due to immune suppression or damaged skin can be linked to conditions such as rosacea and blepharitis, but the mites are usually not the main culprits. Dust mites in bedding can trigger allergies, scabies is a disease caused by a mite that requires treatment, and head lice are insects, not mites. Humans are ecosystems, and most of the microscopic life on skin is harmless or beneficial.

via The Conversation|
#demodex#health#mites
Deadly Mite-Borne Disease Discovered in US, Claiming 70% of Lives
health3 years ago

Deadly Mite-Borne Disease Discovered in US, Claiming 70% of Lives

The bacteria that causes scrub typhus, a disease that can kill up to 70 percent of those infected, has been found in mites living in half of the national parks surveyed in North Carolina, according to a study by the Centers for Disease Control and Prevention (CDC). While no cases have been detected in people in North Carolina, further surveillance is needed to determine if the disease has spread to other states. Scrub typhus is typically found in the Tsutsugamushi Triangle, but it has recently been detected in other areas, prompting researchers to search for it in the US. Treatment includes antibiotics, and without treatment, the disease can lead to death.

via Daily Mail|
#centers-for-disease-control-and-prevention-cdc#disease#health
Beetle-infested furniture leads to rare disease for couple.
health3 years ago

Beetle-infested furniture leads to rare disease for couple.

A French couple developed a rare skin disease called Pyemotes dermatitis after the mites infesting the beetles eating their furniture bit them. The mites, called Pyemotes ventricosus, inject a toxin to paralyze their prey and nourish their eggs. The bites cause extremely itchy welts and pink marks, and in some cases, a comet-shaped rash. The skin condition generally resolves on its own, and the couple was treated with topical glucocorticoids and antihistamines.

via Ars Technica|
#france#furniture-beetles#health
The Disturbing Truth About Face Mites and Your Sleep
science3 years ago

The Disturbing Truth About Face Mites and Your Sleep

Demodex mites, which are less than one millimeter in length and have eight little legs, live on most people's faces and mate in the nighttime. During the day, they hang out inside our pores, and at night, look for other mites on our face to mate with. Although they may sound alarming, the mites are harmless and are found on pretty much everyone. In the future, these Demodex mites could potentially be "symbionts" with us, according to a 2022 study from the journal "Molecular Biology and Evolution."

via New York Post |
#demodex#face#mites
The Disturbing Truth About What Happens on Your Face While You Sleep
science3 years ago

The Disturbing Truth About What Happens on Your Face While You Sleep

Demodex, tiny arachnids that consume skin cells and oils on the human body, are part of the arachnid class and are cousins of spiders and ticks. They usually come out at night to feast on dead skin cells on our face before retreating to hair follicles and oil glands to lay their eggs. Despite their frightful appearance, these mites are harmless and will go unnoticed, and can even help your skin by removing dead skin cells. Scientists estimate that somewhere between 23 per cent and 100 per cent of healthy adults have Demodex, although we wouldn't know about it until they cause skin problems.

via Daily Mail|
#arachnids#demodex#microscopic