Brief Answer:
Cause needs to be found out.
Detailed Answer:
Hello,
Thanks for trusting us with your health concern.
Rashes that are associated with itching are :(1) dermatitis- an itchy rash can result from contact with an agent or chemical that provokes an
allergic response such as a new cream,lotion,soap or detergent.It can also result from ingestion of an allergen.This rash usually forms small red ' bumps' or papules that are itchy.
(2) scabies- this looks like small red bumps which commonly occur between the fingers, at the wrist,knees, waist,
axilla,buttocks. The itching may be worse at night.
(3)
heat rash can cause tiny bumps or blisters on red skin, it has an itchy sensation
(4)
pityriasis rosea- this starts as a small round or oval lesion , eventually other lesions are seen along the lines of the trunk,it is very itchy.
There are other causes but these are the most common.
If there has been no recent excess heat exposure then heat rash would be unlikely, if the rash does not seem to worsen at night and is not in the typical areas then scabies would also be unlikely.
To determine the exact cause, you need to
consult a dermatologist who will take a full history (any change in use of any chemicals/agents, any change in foods or medication, any associated swelling, any associated symptoms, the exact history of the appearance of the rash- appearance from the beginning till now
Physical examination is extremely important in dermatology and is usually the key to the diagnosis.
Using any over the counter cream is not likely to help.
Please feel free to discuss further. I will be glad to answer the follow up queries that you have.
Wishing you good health.
Regards.
Dr. Rakhi Tayal.
For future query, you can directly approach me through my profile URL http://bit.ly/Dr-Rakhi-Tayal