Raceist or prejudice comments sorry u deserve it haha
The only way to diagnose hard lumps on the head is to see a physician. They could be from many different causes.
If you have lumps go to the doctor. There are many causes for these, but only a doctor can determine if there is a problem.
Go see a doctor if possible. If the lumps are hard and attached to the muscle, I'd get it checked out immediately.
The roots of your teeth.
If the blood it to rich in RBC is has the possibility to form lumps or there is more fibrinogen in the blood.
Get a vet
Excess swelling of the lips or gums. Irregular lumps in the mouth. Unexplained excessive bleeding of the gums. Discolored patches or spots on the inside of the mouth.
A hard lump on the wall of your gum can be a gum abscess. It could also be a non-cancerous growth due to an irritation. Any lumps found on the gum or mouth should be seen by a dentist or your doctor.
A TSE is considered abnormal if any swelling, tenderness, lumps, or irregularities are found. Hard, unmoving lumps are abnormal, even if they are painless.
Swollen lumps in the armpits can be an indication of lymphatic disorders and there are a great many causes. Go see a doctor.
Excess swelling of the lips or gums. Irregular lumps in the mouth. Unexplained excessive bleeding of the gums. Discolored patches or spots on the inside of the mouth.
Common causes of lumps on dachshunds include lipomas (benign fatty tumors), cysts, and mast cell tumors. It is important to have any new or changing lumps checked by a veterinarian to determine the cause and appropriate treatment, which may include monitoring, removal, or other interventions.