It could be a lot of things. Try washing your hands really well... if it is Allergies, that might help. There are over the counter rash creams you could try as well, but if it is is serious, or if it lasts more than a day, I suggest seeing a Doctor Who can tell a lot better what it is and how to help.
Look into Eurthema Multiforme, I probably spelled that wrong but Google will correct it for you.
Dysnidrosis
Vesicular Exema
Depending on how often you crack them your knuckles can swell, but your whole hand will not get bigger.
cuz of herpes
The knuckles are joints in the fingers and can be seen when one clenches their hand in a fist. The functions of the knuckles is to allow for bending and movement of the digits.
To crack your knuckles you simply pull back your knuckles in a 45 degree angle and it has to be up to 45 or else you might hurt your hand.
i think it is in because it is behind your skin
You can get a knucklehead if you stand still when you fight the Master Hand. But they have no reason to put Knuckles in the game. Shame.
It does not start in the same place with everyone. Some may notice bumps on their hand. Others may notice a very itchy scalp. Some have breakout patches on elbows or knees.
Left hand= Money leaving you! Right Hand=Money Coming to you :)
we have goss bumps very often. goss bumps usually happens on our hand and legs..
this is easy sonic is really stronger then knuckles sonic using chaos contorl and finel color blaster sonic is very stronger then knuckles