Repeated blisters on finger joints are itchy.

Hello, eczema mostly occurs in the palm of your hand, and your hands are symmetrical. There are many forms of skin lesions, such as papules, blisters, erosion, exudation and scab, and two or three of them are often dominant. The change of your illness is closely related to the season, as well as diet and rest. If your hands and palms come into contact with water and soap, the damage will be aggravated. The fungal test was negative.

The occurrence of herpes zoster has obvious seasonality, mostly at the turn of spring and summer, and it heals itself in winter, mainly among young people. Skin lesions are also symmetrically distributed, mainly blisters, which appear in batches and can be seen in the palm, fingertips and fingertips. Blisters peel off when they are dry, exposing new skin, often accompanied by varying degrees of itching and burning sensation. The occurrence of this disease is related to poor sweating or allergic reaction, and the fungal examination of the damaged part is negative.

Contact dermatitis is caused by contact with allergic substances, and it is a skin allergic reaction with obvious contact history. Skin lesions appear at the contact site, with clear boundaries and consistent shapes, mainly erythema and edema, and blisters and bullae can be seen in severe cases. After disengagement, it can gradually fade to recovery. Local fungal examination was negative.

Exfoliative keratolysis is a superficial skin disease characterized by exfoliated cutin of palms and soles, often accompanied by local hyperhidrosis, which easily occurs in warm and hot seasons. Skin lesions mainly involve the heart of hands and feet, and both sides are symmetrical, showing white spots formed by loose keratin and tissue-like scales that are easy to fall off. The underlying skin is normal and the itching is not obvious. The fungal test was negative.

I suggest you find out the cause before taking the medicine. But you can also try to treat it for a while first, and then go to see a doctor if it is not good.