Is it normal for a black spot to remain 5 years after being stabbed by a pencil?
Generally speaking, whether it is normal to have a black spot five years after a pencil puncture wound depends on the specific characteristics of the spot and any accompanying symptoms. If there is discomfort or significant concern, it is recommended to seek medical evaluation promptly. The detailed analysis is as follows:

If the black spot resulted from residual pencil lead (graphite) particles at the time of injury, and has remained unchanged in size and color over the years without symptoms such as redness, swelling, pain, itching, elevation, or ulceration, it is usually considered normal. Pencil lead is primarily composed of graphite, which is chemically stable. Once embedded in the skin, it becomes encapsulated by surrounding tissue, leading to permanent pigmentation that does not pose a health risk.
If the black spot has recently changed significantly—such as increasing in size, darkening in color—or is accompanied by local warmth, pain, itching, or increased discharge, this is not normal. It could indicate chronic inflammation triggered by residual graphite or abnormal tissue proliferation, both of which warrant medical attention due to potential health risks.
If the black spot shows no abnormalities, no special treatment is needed; however, avoid repeated friction or squeezing. If any changes occur, seek prompt evaluation from a dermatologist for professional assessment. Maintain good hygiene of the affected skin area, and avoid self-picking or applying unverified medications to prevent infection or worsening symptoms.