Hair & scalp
Is it safe to shave?
Yes, with a few precautions: a sharp clean blade, warm water, a shaving cream or gel rather than soap, shaving with the grain, and not going over the same spot twice. Most irritation and ingrown hairs come from technique, not from shaving itself.
What this does and does not tell you
This is general information, not a diagnosis. Only a clinician can examine you, take your history and run tests. The same symptom has different causes in different people.
If something is sudden, severe, or getting worse quickly, get medical advice rather than reading on.