What’s wrong with itchy, swollen, red hands in the summer?

Itchy swollen red hands in summer may be related to insect bite dermatitis, contact dermatitis, eczema and other causes.
1. Insect bite dermatitis: after insects bite the skin on the hands, the secretions and saliva of the insects will lead to an allergic reaction, which can cause itching, redness and swelling of the skin on the hands.
2. Contact dermatitis: hand skin contact with animal hair and other allergenic substances, can cause skin inflammation, skin redness, swelling, itching.
3. Eczema: hand skin contact with external stimulating substances caused by local inflammation, can appear hand itching, swelling, redness phenomenon.
It is recommended to go to the hospital in the summer hand itching, swelling and redness, a clear diagnosis, under the guidance of the doctor for standardized treatment.