In reply to shaymarriott:
CLIDT.
Clean.
Lance (only if painful)
Iodine
Duoderm
Tape.
Never tape directly onto a blister. Preferably leave it in tact, as said above.
However I have always cut and drained blisters. Especially in awkward places. Just force of habit. I prefer to drain it and clean it. Just the way I was taught/found it easier whatever I was doing. If your going to do it, latex gloves, clean/sterile kit, and sterile gauze to wipe the gunk away. Wash and treat it. Then keep it covered with duederm/second skin stuff and tape it. It's on your hand so going to be awkward.
Keep an eye on it, look for redness and puffiness of the skin and surrounding area. If there's redness, and your concerned it's getting infected, draw a circle round the redness. If the redness passes outside the circle, it's tracking and maybe infected. Seek medical attention.
If there's any doubt, then there is no doubt; get it checked by a professional.
Post edited at 22:01