Hair Loss – A follicle describes a crust or cavity from which the hair emerges on the skin’s surface. The expression folliculitis is used to refer to the inflamed condition of the hair. Determined by the causal organism, folliculitis causes can be distinguished as follows:
- Bacterial Folliculitis
- Fungal Folliculitis
- Viral Folliculitis
- Parasitic Folliculitis
Bacterial folliculitis develops when bacteria enters the body. The bacteria can get trapped and the infection may spread to the parts of the body in the hair follicles.
Folliculitis may be superficial or deep. Superficial folliculitis is made up of pustules which are small-circumscribed elevations of the skin containing pus. The pustules are often surrounded by a ring of redness. Folliculitis results when the disease goes and involves more follicles to produce furuncles and carbuncles. These can cause damage and discoloration to the skin and are more serious than folliculitis.
Bacterial folliculitis occurs in adults and children. Staphylococcus aureus is the most common of folliculitis causes. It also causes a chronic infection which involves the hair follicle, sycosis.
Besides the species of streptococcus, coliform bacteria and pseudomonas, proteus has also been indicated as bacterial folliculitis causes. This disease is caused as a result of unsanitary conditions at a spa. Individuals receiving therapy for acne are sometimes developed in by this sort of folliculitis.
Some follicle infections spontaneously resolve themselves. However, bacterial infections like impetigo, furuncles, carbuncles and “hot tub” folliculitis may not resolve spontaneously and generally require prescription therapy. All these infections are typically diagnosed by clinical presentation, and predisposing factors are identified and eliminated.
As the name implies folliculitis is caused due to fungal infections. Fungal infections are found in the skin’s top layers; deep infections invade deeper layers of the epidermis.
The yeast candida folliculitis, pityrosporum fungus and the dermatophytic fungus are the prominent among the folliculitis causes.
Dermatophytic folliculitis is caused most often by a zoophilic species, i.e. fungal species which show attraction to or affinity for animals. A deep fungal penetration determines the degree of baldness loss that occurs because of the infection and causes a high amount of inflammation.
Tinea capitis or ringworm of the mind is the main kind of pediatric folliculitis. The features of tinea capitis vary depending upon the species responsible for the disease. Typically, there is alopecia using a varying amount of inflammation.
From the variants, asymmetrical lesions with short hair, 1 to 3 millimeters in length, are observed. Inflammation with scaling could be observed on careful inspection.
The most acute inflammatory reactions are called produce and kerion debilitating boggy masses studded with pustules. Once the disease is in advanced stages, these lesions can result in scarring and severe hair loss. A diagnosis is confirmed by cultures.
Tinea barbae is a superficial infection that is restricted to the areas of the face and neck and occurs in adult men and older adolescent. The presentation of tinea barbae consists of red inflammatory papules and pustules folliculitis with exudation, crusting and related hair shaft loss.
Pityrosporum folliculitis is caused by pityrosporum yeasts leading to an eruption. The lesions are red follicular papules and pustules located on the upper back, shoulders and torso.
Candida folliculitis is caused by the Candida species.
Folliculitis involves a variety of diseases of the hair follicle. Infection from the herpes simple virus (HSV) often progresses to form pustular or ulcerated lesions, and eventually a crust. An condition which manifests as numerous papules over the beard area is indicated by infection. There are some reports of folliculitis caused by herpes zoster infection.
Parasites causing folliculitis are smallish pathogens that burrow into the hair follicle to live there or lay their eggs. Mites like demodex brevis and demodex folliculorum are natural hosts of the follicle that is human.