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A 25-year-old member asked:

how long do mosquito bites itch for?

3 doctor answers10 doctors weighed in
Dr. Tsu-Yi Chuang
Dermatology 50 years experience
Days: Usually last for a few days, rarely over week.
Dr. Alan Jackson
Addiction Medicine 30 years experience
Longer if you itch: Them. Itching will go away within days if you don't scratch.
Dr. William Zachary
Wilderness Medicine 25 years experience
A few days usually: Occasionally, people will have a delayed-type hypersensitivity reaction to mosquito bites. I am one of those people. The initial redness (relatively mild) lasts a day or two, followed by persistent redness and itching that goes on for a week or more. Hydrocortisone cream is your friend under these circumstances.

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Similar questions

A member asked:

My baby got a mosquito bite, and now it looks infected; what should I do?

4 doctor answers9 doctors weighed in
Dr. Scott Katz
Pediatrics 26 years experience
Call your doctor: A mosquito bite (or any skin lesion) that appears infected needs to be examined. If your doctor agrees it is infected, they will prescribe the appropriate treatment.
A 21-year-old member asked:

Does the itching of scabies disappear after treatment?

2 doctor answers3 doctors weighed in
Dr. Ryan Stanton
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After a while: The symptoms can persist for a couple weeks after treatment. Sometimes it takes more than one treatment, but even with killing all the bugs, it will take a couple weeks for the rash to resolve.
A 22-year-old member asked:

Is jock itch contagious?

3 doctor answers4 doctors weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Yes, it's contagious: Jock itch is a fungal infection and can spread to other parts of the body or to other people. Treatment is usually with over-the-counter anti-fungal creams. Rashes that don't go away easily, or those that keep returning after treatment, should be evaluated by a doctor. People with diabetes get more fungal infections, and have a harder time getting rid of infections.
A 39-year-old member asked:

Can mosquito bites itch for a long time?

1 doctor answer2 doctors weighed in
Dr. William Zachary
Wilderness Medicine 25 years experience
Sometimes: Usually mosquito bites only last up to a few days; however, in those people who have a delayed-type hypersensitivity reaction to them, they can last much longer. Cortisone cream usually works well. If it doesn't, i'd consider seeing the doc - high potency topical steroids might be needed. Remember, scratching can lead to infection.
San Antonio, TX
A male asked:

Why are my mosquito bites lasting so long? Usually they go away within an hour. Now three days later it's visible and still itches.

1 doctor answer1 doctor weighed in
Dr. John Chiu
Allergy and Immunology 57 years experience
Allergy: Most people become allergic to mosquito venom after a bite or two. with each bite eliciting a larger reaction than before. It is possible that the lesion and itching may even become progressively worse over the course of a week. Try topical hydrocortisone plus anti-itch cream on the site.

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Last updated May 12, 2019

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