Symptoms
Folliculitis signs and symptoms vary, depending on the type of infection.Superficial folliculitis, which includes types that affect the upper part of the hair follicle, may cause:
- Clusters of small red bumps that develop around hair follicles
- Pus-filled blisters that break open and crust over
- Red and inflamed skin
- Itchiness or tenderness
- A large swollen bump or mass
- Pus-filled blisters that break open and crust over
- Pain
- Possible scars once the infection clears
Superficial forms of folliculitis include:
- Staphylococcal folliculitis. This common type is marked by itchy, white, pus-filled bumps that can occur anywhere on your body where hair follicles are present. When it affects a man's beard area, it's called barber's itch. It occurs when hair follicles become infected with Staphylococcus aureus (staph) bacteria. Although staph bacteria live on your skin all the time, they generally cause problems only when they enter your body through a cut or other wound. This can occur through shaving, scratching or with an injury to the skin.
- Pseudomonas folliculitis (hot tub folliculitis). The pseudomonas bacteria that cause this form of folliculitis thrive in a wide range of environments, including hot tubs whose chlorine and pH levels aren't well regulated. Within eight hours to five days of exposure to the bacteria, a rash of red, round, itchy bumps will appear that later may develop into small pus-filled blisters (pustules). The rash is likely to be worse in areas where your swimsuit holds contaminated water against your skin.
- Tinea barbae. Caused by a fungus rather than a bacterium, this type of folliculitis develops in the beard area in men, causing itchy, white bumps. The surrounding skin also may become reddened. A more serious, inflammatory form of the infection appears as pus-filled nodules that eventually form a crust and that may occur along with swollen lymph nodes and fever.
- Pseudofolliculitis barbae. An inflammation of the hair follicles in the beard area, pseudofolliculitis barbae affects men when shaved hairs curve back into the skin. This leads to inflammation and, sometimes, to dark raised scars (keloid scars) on the face and neck.
- Pityrosporum folliculitis. Especially common in teens and adult men, pityrosporum folliculitis produces chronic, red, itchy pustules on the back and chest and sometimes on the neck, shoulders, upper arms and face. It's caused by the yeast-like fungus.
- Herpetic folliculitis. Shaving through a cold sore — a small, fluid-filled blister caused by the herpes simplex virus — can sometimes spread the herpes infection to neighboring hair follicles.
Types of deep folliculitis include:
- Gram-negative folliculitis. This sometimes develops if you're receiving long-term antibiotic treatment for acne. Antibiotics alter the normal balance of bacteria in the nose, leading to an overgrowth of harmful organisms (gram-negative bacteria). In most people, this doesn't cause problems, and the flora in the nose returns to normal once antibiotics are stopped. In a few people, however, gram-negative bacteria spread and cause new, sometimes-severe acne lesions.
- Boils and carbuncles. These occur when hair follicles become deeply infected with staph bacteria. A boil usually appears suddenly as a painful pink or red bump. The surrounding skin also may be red and swollen. The bump then fills with pus and grows larger and more painful before it finally ruptures and drains. Small boils usually heal without scarring, but a large boil may leave a scar. A carbuncle is a cluster of boils that often occurs on the back of the neck, shoulders, back or thighs. Carbuncles cause a deeper and more severe infection than does a single boil. As a result, they develop and heal more slowly and are likely to leave scars.
- Eosinophilic folliculitis. Seen primarily in those with HIV, this type of folliculitis is characterized by recurring patches of inflamed, pus-filled sores, primarily on the face and sometimes on the back or upper arms. The sores usually spread, may itch intensely and often leave areas of darker than normal skin (hyperpigmentation) when they heal. The exact cause of eosinophilic folliculitis isn't known, although it may involve the same yeast-like fungus responsible for pityrosporum folliculitis.
Mild cases of folliculitis often clear up without any treatment. But if the infection doesn't improve despite home care, appears to spread or recurs often, call your doctor or a dermatologist. You may need antibiotics or antifungal medications to help control the problem.
No comments:
Post a Comment