What Do Mite Bites Look Like
In their later stages of life, harvest mites only affect insects. However, in their larval stage they bite humans or other mammals. Harvest mite larvae are called “chiggers.” Probably the mite that most commonly affects humans, a chigger's bite is painless as it is happening. It is not until later that the effects can been noticed. After the microscopic creature finishes feeding, it falls from the host and leaves in its wake a red swelling with a hard, white center 1. This welt comes with intense itching that is not terribly painful to scratch 1. Beware, though, because this may lead to too much scratching and a broken bite may allow further infection to invade. Welts generally have delayed onset, meaning they don’t form immediately upon exposure, and they may be accompanied by a mild fever.
If you are experiencing serious medical symptoms, seek emergency treatment immediately.
- In their later stages of life, harvest mites only affect insects.
Scabies mites fit into several groups, each of which prefers a specific species for feeding. Some choose humans to serve as hosts. They live their entire lives (about two weeks) in their host, who may not notice them for up to a month, depending on previous exposure. Scabies mites actually burrow into the skin, where they lay eggs. The discomfort scabies causes tends to be particularly intense at night, so patients sometimes suffer from lack of sleep. Redness and itching are the first signs but this may develop into a rash that includes small welts at the base of hairs. These may develop on most of the body, including the thighs, calves, armpits, and wrists.
- Scabies mites fit into several groups, each of which prefers a specific species for feeding.
- Scabies mites actually burrow into the skin, where they lay eggs.
Dust mites don’t actually bite humans but they do have distressing effects. They generally feed on flakes of dead skin so they live in places like upholstered furniture and mattresses. They and their feces may become airborne, triggering allergic reactions in humans. These reactions include respiratory effects, like asthma attacks, and dermatological symptoms, most often a red, itchy rash. Dust mites do best in humid environments, so consistently low humidity in the home can keep dust mites at bay.
- Dust mites don’t actually bite humans but they do have distressing effects.
- Dust mites do best in humid environments, so consistently low humidity in the home can keep dust mites at bay.
Itch mites generally prefer insects to humans, but people who are in frequent contact with hay, grass, and seeds may be bitten 1. The bite itself isn’t felt but will cause the later (about 12 hours) onset of a small red swelling with a pimple-like elevation at the center 1. Itch mite bites are particularly painful when scratched. They usually bite unprotected areas like the face and arms. For the most part, humans are relatively safe from itch mites but, with an itch mite population boom, the mites will take any host they can get 1. They cannot, however, live on humans nor can they survive indoors, so they are not a huge threat.
Rodent and Bird Mites
As their name suggests, rodent and bird mites prefer rodents (mice or rats, depending on the specific type) and birds (including chickens and pigeons) to people. However, if these mites find themselves without a host, they are willing to bite humans. Rodent and bird mites are blood-suckers, and leave inflammation and redness around the bite. As with other mite reactions, intense itching usually accompanies exposure 1.
- As their name suggests, rodent and bird mites prefer rodents (mice or rats, depending on the specific type) and birds (including chickens and pigeons) to people.
- Rodent and bird mites are blood-suckers, and leave inflammation and redness around the bite.
The Signs and Symptoms of Flea Bite Allergies in Humans
Differences Between Bedbugs & Chiggers
Which Insect Bites Cause Blisters?
Side Effects of a Bedbug Bite
Carpenter Bee Sting Reaction
Small Red Bumps on the Wrist
Coughing With a Rash in Children
The Effects of Eating Buttercup Flowers
Complications That Can Result From Scabies
Signs & Symptoms of Human Skin Mites
- Living with Bugs
- Nelson HS. Immunotherapy for house-dust mite allergy. Allergy Asthma Proc. 2018;39(4):264-272. doi:10.2500/aap.2018.39.4145
- Kim JY, Rhee CS, Cho SH, Choe G, Kim DY, Han DH. House dust mite sublingual immunotherapy in children versus adults with allergic rhinitis. Published online ahead of print, 2020 Jun 13. Am J Rhinol Allergy. 2020;1945892420931713. doi:10.1177/1945892420931713
- Asthma and Allergy Foundation of America. Dust mite allergy. Updated October 2015.
- Babe KS Jr, Arlian LG, Confer PD, Kim R. House dust mite (Dermatophagoides farinae and Dermatophagoides pteronyssinus) prevalence in the rooms and hallways of a tertiary care hospital. J Allergy Clin Immunol. 1995;95(4):801-805. doi:10.1016/s0091-6749(95)70121-4
- Illinois Department of Public Health. Mites affecting humans.
- Lee E, Lee SY, Park MJ, Hong SJ. TNF-α (rs1800629) polymorphism modifies the effect of sensitization to house dust mite on asthma and bronchial hyperresponsiveness in children. Published online ahead of print, 2020 May 20. Exp Mol Pathol. 2020;115:104467. doi:10.1016/j.yexmp.2020.104467
- Boberg E, Johansson K, Malmhäll C, Weidner J, Rådinger M. House Dust Mite Induces Bone Marrow IL-33-Responsive ILC2s and TH Cells. Int J Mol Sci. 2020;21(11):E3751. Published 2020 May 26. doi:10.3390/ijms21113751
- Weitzel T, Makepeace BL, Elliott I, Chaisiri K, Richards AL, Newton PN. Marginalized mites: Neglected vectors of neglected diseases. PLoS Negl Trop Dis. 2020 Jul 23;14(7):e0008297. doi: 10.1371/journal.pntd.0008297. PMID: 32701946; PMCID: PMC7377360.
- Atta AH, Amer RM, Mesbah AE, Khater MW. Sublingual Versus Subcutaneous Immunotherapy as regards Efficacy and Safety in Respiratory Allergic Patients. Egypt J Immunol. 2019;26(2):65-78.
- American Lung Association. Dust mites. Updated July 1, 2019.
An American living in Prague, Whitney Arana holds a Bachelor of Arts in English language and literature from Davidson College. Currently, she works as a teacher of advanced business and exam-prep English plus conversational Spanish. She contributes regularly to both Czech and American publications on topics including health, literature, food, and travel.