Hello,
These rashes sound quite bothersome to you. From what you have described, they seem to be hives, also known as urticaria. The photo's resolution is low, thus I can only see some vague red bumps. I suppose it may be more obvious if seeing it in person.
Hives will suddenly appear, be very itchy, sometimes associated with a burning sensation, and then disappear in a few hours, usually within the same day. Please try your best not to scratch them as the rashes may worsen with excessive scratching.
There may be a trigger at times shortly before the onset of these rashes. The most common triggers are a recent infection (cough/ flu/ fever), allergy to a certain medication or food. However in most situations, patients are unable to recall any particular trigger. Are you able to recall any of these triggers prior to the onset of your itchy bumps?
Hives can be unbearably itchy, and anti histamines can help to alleviate the itch. If the hives are recur on a regular basis, it is best to seek a dermatologist's help as blood tests may be needed.
If there is difficulty breathing, funny wheezing noises from the throat, swollen eyelids or lips when hives occur, you will need to go to the emergency department as soon as possible as it means that your airway may be blocked.
The other alternative diagnosis would be a contact allergy if the rashes are only limited to the face. Do recall if you have recently used any new skincare or facial products, or makeup. However you did mention that the rashes appear elsewhere, so this possibility may be low.
I hope that your condition improves soon. Do have a proper assessment by a dermatologist.
Happy new year and take care!
Best regards,
Dr Ker Khor Jia
