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A 28-year-old member asked:

can excessive diphenhydramine actually make you itchy?

1 doctor answer2 doctors weighed in
Dr. Arthur Apolinario
Family Medicine 25 years experience
Yes: I have had several patients who had become allergic to Diphenhydramine after using it on the skin for poison ivy or other ailments, so yes, although rare, any previous use of Diphenhydramine can cause an allergic reaction to it, such as itching at first, then rash. This is a concern and must be documented because it is one of our go-to medicines for allergies.

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Similar questions

A 21-year-old member asked:

Does the itching of scabies disappear after treatment?

2 doctor answers3 doctors weighed in
Dr. Ryan Stanton
Emergency Medicine 18 years experience
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 41-year-old member asked:

What is pruritus ani?

2 doctor answers2 doctors weighed in
Dr. Luis Villaplana
Internal Medicine 35 years experience
Itchy butt: Literally. Causes are typically related to hemorrhoids in adults but in the young , parasitic worm infections can trigger awful nightime anal itch.
CA
A 44-year-old member asked:

Is there a particular bacteria that causes itchiness?

2 doctor answers3 doctors weighed in
Dr. Steven Machtinger
Allergy and Immunology 44 years experience
Maybe.: Interesting question. Staphylococcus infection of eczematous skin is certainly associated with increased itchiness. But its not clear if the bacteria increases itchiness or simply exploits the skin injured by scratching to cause a secondary infection.
A 30-year-old member asked:

How can you treat itching due to urticaria?

2 doctor answers8 doctors weighed in
Dr. James Fox
Allergy and Immunology 44 years experience
Antihistamines: For most patients antihistamines such as benadryl, (diphenhydramine) zyrtec, Allegra and Claritin are effective. If these are not effective second line treatment (off-label) could include Doxepin and singulair and h2 antihistamines, such as zantac. It is important to find the cause of the hives, and an allergist may be able to help.

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Last updated Jan 20, 2018

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