<human>: Yes i recently moved to a very humid region and have developed small itchy bumps on my forearms what could this be? This happened exacly a year ago when i lived in Korea and now i live in Japan how can this be treated or prevented. I have no known allergies and beleive this is weather related. Im currently using tea tree oil.
<bot>: Hello, 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 lip sand/or tongue. In most cases (80%) it is not allergic and long-acting non-sedating antihistamines such as Allegra 180/90 and/or cetirizine 10 mg 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. Food allergies 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.