Excuse me, what is this little rash on your arm? A little itchy, tolerable.

Eczema is a common disease, often caused by allergies or frequent dampness. It is an inflammatory reaction of the skin, accompanied by severe itching.

Guiding opinions:

Pay attention to avoid scalding with hot water, try not to scratch, and avoid contact with possible sensitive materials. Try not to touch chemicals. Oral antihistamines can be wiped with Folium Artemisiae Argyi water, with recurrent attacks.