Brief Answer:
Knuckle cracking is not harmful to joints of fingers. Detailed below.

Detailed Answer:
Hello,
Welcome to the 'Ask A Doctor service'
I read your concern and below is my explanation for knuckle cracking.

Some person do knuckle cracking when they are in stress. Few person also develop habit of doing knuckle cracking.
However knuckle cracking is not helpful in anyway to increase joint space and it is not good habit.

If you perform knuckle cracking occasionally than no need to worry. You have to take care about not developing habit of it.

If any of the knuckle joint having soft tissue swelling, pain or redness than arthritis can be possible. In such case you need to consult nearby doctor.

Hope I have answered your question.

Let me know if I can assist you further.

Regards

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Brief Answer:
Follow up question.

Detailed Answer:
Hello,
Welcome back to the Ask A Doctor service.
I could not get your question. Kindly ask specific question related to health problem.

You are talking regarding application of baking soda to remove stain. But there is no need to apply it over mattress. It will disappear with the time.

If you have any question regarding your health than you can ask further. I w'll be happy to help you further.

Regards

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