what causes allergy on skin

Skin allergies can indeed be quite perplexing, with a range of potential culprits that could be behind those red, itchy spots you’re experiencing. Considering you’ve recently been hiking, environmental factors could certainly play a role. Plants like poison ivy, poison oak, or various other vegetation you might have brushed against could trigger contact dermatitis—a common allergic reaction that results in rashes. Bug bites could also cause similar reactions, but they typically resolve faster. If you’ve already tried hydrocortisone and antihistamines without improvement, it might be worthwhile to consider if any new products, detergents, or clothing materials might have irritated your skin, as contact with irritants can cause similar symptoms. Food-related allergies usually manifest quickly after consumption, often with symptoms beyond just a rash, such as gastrointestinal distress or respiratory issues. So, if you’ve had shrimp without issues before, it seems less likely unless your sensititivy has changed, which can happen. Pollen or other inhalants from the outdoors might also be culprits, especially if you have a history of allergies. Since the problem has persisted for over a week, you shouldn’t rule out visiting a healthcare provider. It’s crucial to get a professional assessment, particularly if the rash spreads, worsens, or is accompanied by other symptoms like fever or breathlessness. Potential skin allergy triggers are indeed broad, catching everything from environmental exposures to diet and personal care products. In situations like this, a dermatologist or an allergist could help pinpoint the root cause, possibly through a skin examination or patch testing. Keeping a diary of any new exposures or products used recently could also assist your healthcare provider in determining the cause. In the meantime, minimizing exposure to known irritants, continuing to use hypoallergenic products, and wearing loose, cotton-based clothing can aid in reducing irritation. Remember, while some skin issues do resolve on their own, if there’s any doubt about the severity or persistence of the issue, a medical consultation is the safest path forward.