Folliculitis is an inflammatory reaction in the skin around hair roots [the follicles] and it gives the appearance of little red marks and pimples surrounding the them. It is usually caused by infection, but can also be triggered by friction or exposure to chemicals on the affected area. Bacteria known as Staphylococcus aureus are the usual culprits, but <a href="/diseases/facts/pityriasisversicol… a superficial fungal infection, can sometimes be responsible. If the rash only occurs on shaved skin it is worth considering the possibility of a condition known as pseudofolliculitis, which is caused by ingrowing hairs.

Antiseptic soap preparations or dab-on antibiotic lotions and creams usually settle the condition. Oral antibiotics, such as Erythromycin, are sometimes used for severe of persistent problems. Any rash caused by friction or chemicals won't respond unless the underlying skin irritant is avoided. Pseudofolliculitis tends to get better once you stop shaving the affected skin or switch to an electric shaver.

A correct diagnosis is important in determining the best approach to treatment, so I would suggest seeing your doctor and, if you are not making progress, consulting a dermatologist for further advice.