Feet long blisters are very itchy can squeeze out the water causes include eczema, tinea pedis, sweat herpes, viral herpes, etc., the treatment includes medication and so on. 1. Eczema: If it is blister eczema, then you can give anti-inflammatory treatment with drugs such as dexamethasone. 2. Tinea pedis: If it is blistering tinea pedis, then anti-fungal treatment such as terbinafine can be given. 3. Sweat herpes: if it is sweat herpes, then you can give tretinoin urea ointment anti-inflammatory and anti-itch treatment. 4. viral herpes: for viral herpes caused by foot blisters very itchy can be squeezed out of the water phenomenon, at this time you can give interferon and other drugs antiviral treatment. Finally, the appearance of feet long blisters very itchy can squeeze out the phenomenon of water, please consult a doctor in time, the above drugs need to follow the doctor’s instructions.