Small itchy red bumps on the skin that disappear with no marks or scars
are suggestive of urticaria
. Occasionally one can have swellings of the lipsand/or tongue. In most cases (80%) it is not allergic and long-acting non-sedating antihistamines such as Allegra
180/90 and/or cetirizine
10mg for 6 weeks (minimum) to 3 months (most likely will be required in your case) is recommended. Infections can be a trigger so basic investigations to exclude infections are sometimes helpful.
are not a cause unless there is a specific food you are aware of that causes the lumps within the hour of having the food.
I hope that was useful.