thanks for using health care magic.
it would appear you are suffering from folliculitis
which is inflammation
of hair follicles.
Folliculitis is common in people who use topical corticsteroids,
people with diabetes
, pre-existing skin condtion such as dermatitis
or following trauma such as after shaving. Use of electric shaving
machines if possible, shaving in the direction of the hairs, use of
antiseptics after shaving are all ways of preventng folliculitis.
As concerns the marks, its only a matter of time to clear off,
alternatively you could meet a dermatologist
for a quicker response.
Best regards and hope this helps you