Thank you for posting your query.
First of all, I wish to reassure you that your symptoms do not point to any serious problem.
The most likely cause of your symptoms is scalp nerve
injury- nerves located in the skin over the skull bone.
This is a minor problem and mostly recovers in a short span of time- 4-6 weeks at most, but usually within a few days.
You may take vitamin B12
supplements to help the nerve recover faster.
I hope it helps. I would be pleased to answer any further queries.
Wishing you good health,
Dr Sudhir Kumar MD DM (Neurology) XXXXXXX consultant Neurologist