The likelihood is skin allergy, or eczema, try with Pi Kangling.

可能是皮肤过敏，或者湿疹，用皮康灵试试。

youdao

Vitamin B6 or pyridoxine deficiency can result in dermatitis or eczema.

维生素b6或维生素b6缺乏可导致皮炎或湿疹。

youdao

Suitable for any skin type, effective in reducing black speck, dry tinea or eczema.

适合各种肤质，对黑斑、干癣、湿疹有效果。

youdao

Since childhood, Amy had suffered from severe allergies, which could manifest as hives or eczema.

NEWYORKER: A Loaded Gun

He now plans to repeat the study in people who have certain skin conditions such as psoriasis or eczema.

BBC: NEWS | Health | Human skin harbours unknown bugs

They used skin prick tests to identify those with allergic reactions, and questionnaires to identify those who developed asthma or eczema.

BBC: A child is tested for allergic reactions.