Male, 65 years old, three days ago, he found a hard lump suddenly growing in the palm, about 1cm in diameter. It's not painful or itchy. He doesn't feel when he presses it, but it's very hard. It's not a cocoon. It feels like a hard lump under the skin. I can't see it in the photos, but it feels hard to touch.
This condition should be benign, which may be caused by local skin epidermal thickening caused by excessive force or friction. At present, if there is no pain and does not affect normal life, you can observe temporarily without relevant treatment and don't worry too much.
The sudden growth of the palm may be a cyst, which is a benign lesion. The treatment is mainly based on the symptoms. If there is nothing, you can not treat it temporarily, but you first go to a B-ultrasound. B-ultrasound can clarify the nature of this. As for the treatment, surgery is generally the main method.
If there are obvious hard lumps in the palm and they can't be judged effectively in the photos, it may be caused by the friction during normal work. If there are no symptoms, there is no need to do any treatment, just soak your hands in warm water for 20 minutes before going to bed every day.