In later stages, follicular rupture, lymphocytes, histiocytes and plasma cells are seen, as well as perifollicular and interstitial dermal fibrosis. Histologically, early lesions show dense perifollicular inflammatory infiltrates consisting mostly of neutrophils. The disease shows a chronic and relapsing course. Although the exact cause remains unknown, S. aureusis usually cultured from these pustules. Clinically, the majority of the patients were generally healthy, without any systemic symptoms or any signs of immunosuppression. At the periphery of lesion, follicular pustules continue to form. Although in most patient FD started in the vertex, other sites such as the occipital or midscalp area may also be affected. It is an inflammatory disease characterised by follicular pustules and haemorrhagic crusting, leading to scarring hair loss. įolliculitis decalvans is a rare type of cicatricial alopecia and was first described by Quinquaud in 1881. Treatment options include topical antibiotic or disinfectant solutions such as mupirocin cream, triclosan or chlorhexidine and antistaphylococcal systemic antibiotics. Other forms of folliculitis can be identical in appearance, so this possibility should always be taken into consideration. aureus, so nasal and perineal cultures should be taken. Biopsy shows neutrophils in the dermis and follicular wall damage. Biopsy is rarely needed to distinguish between fungal or viral folliculitis. Systemic symptoms, such as fever or lymphadenopathy, may occur when the involvement is widespread. The typical lesion of folliculitis is a small inflamed, dome-shaped papule or pustule which can be drained spontaneously. The major cause is either contagion or autoinoculation from a carrier focus, usually nasal or perianal region. aureusis the most common cause of folliculitis. In addition, immunodeficiencies such as HIV/AIDS and diabetes mellitus are also predisposed to folliculitis. Some of the predisposing factors are hyperhidrosis, maceration, friction, overweight, medications such as corticosteroids and halogenated compounds, as well as occlusive hair care products and topical hydrocarbons, such as oils and tars. The most seen folliculitis of scalp are Staphylococcus aureus folliculitis, Herpes simplex virus folliculitis and dermatophytic folliculitis. It is classified according to the microbial aetiology, including bacteria, viruses and fungi, as well as many other non-infectious ones. Folliculitis is a pyoderma that begins within the hair follicle.
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