3 doctors weighed in:

I used Benadryl (diphenhydramine) and it dried up my rash in two nights. How did it work?

3 doctors weighed in
Dr. John Chiu
Internal Medicine - Allergy & Immunology

In brief: By itself

The rash would have dried up in the same time with or without benadryl (diphenhydramine).
The only way Benadryl (diphenhydramine) might have helped would be its effect on itching thus cutting your edge to scratch the rash

In brief: By itself

The rash would have dried up in the same time with or without benadryl (diphenhydramine).
The only way Benadryl (diphenhydramine) might have helped would be its effect on itching thus cutting your edge to scratch the rash
Dr. John Chiu
Dr. John Chiu
Thank
Dr. J. Lawrence Dohan
Dermatology

In brief: Not the benadryl (diphenhydramine)

Rubbing Benadryl (diphenhydramine) on skin tends to numb it, nothing else.
Oral Benadryl (diphenhydramine) is helpful for hives (there are far better antihistamines), but not for any other kind of rash. Benadryl (diphenhydramine) is useless for any contact dermatitis unless you want a sedative. Be happy you are better. Many rashes are brief. Throw away the Benadryl (diphenhydramine) unless you want a sleeping pill.

In brief: Not the benadryl (diphenhydramine)

Rubbing Benadryl (diphenhydramine) on skin tends to numb it, nothing else.
Oral Benadryl (diphenhydramine) is helpful for hives (there are far better antihistamines), but not for any other kind of rash. Benadryl (diphenhydramine) is useless for any contact dermatitis unless you want a sedative. Be happy you are better. Many rashes are brief. Throw away the Benadryl (diphenhydramine) unless you want a sleeping pill.
Dr. J. Lawrence Dohan
Dr. J. Lawrence Dohan
Thank
Dr. Keith Ramsey
Pediatrics - Adolescent Medicine

In brief: Benadryl (diphenhydramine)

Could help if you had a contact dermatitis.
It is not likely to dry up another type of rash. It may or may not be the reason the rash dried up.

In brief: Benadryl (diphenhydramine)

Could help if you had a contact dermatitis.
It is not likely to dry up another type of rash. It may or may not be the reason the rash dried up.
Dr. Keith Ramsey
Dr. Keith Ramsey
Thank
Get help from a real doctor now
Dr. Christopher Crosby
Board Certified, Dermatology
12 years in practice
93K people helped
Continue
108,000 doctors available
Read more answers from doctors