ABSTRACT
Pityriasis amiantacea (PA) is a papulosquamous condition of the scalp,characterized by asbestos - like thick scales attached to the hair shaft. It is thought to represent a reaction pattern to inflammatory skin disorders like psoriasis, seborrhoeic dermatitis, tinea capitis, atopic dermatitis and lichen planus, rather than a distinctive disease. The scaling may be localised or generalised, depending on the underlying condition and its duration.This report highlights the clinical features of pityriasis amiantacea secondary to atopic dermatitis and the differential features of other papulo-squamous scalp disorders such as scalp psoriasis, seborrhoeic dermatitis and lichen planus.Scalp psoriasis and seborrhoeic dermatitis are the commonest causes of PA as well as the closest differentials hence should be excluded in all cases. The longterm sequelae of PA include scalp fibrosis and permanent hair loss hence should be identified and treated promptly. The management modalities of PA will also be discussed.
Subject(s)
Pityriasis/diagnosis , Pityriasis/therapy , Scalp Dermatoses/etiology , Adolescent , Female , Humans , Pityriasis/etiology , Scalp Dermatoses/diagnosis , Scalp Dermatoses/therapyABSTRACT
BACKGROUND: Vitiligo is disfiguring in the darker racial ethnic group as a result of the sharp contrast between the normal skin and the depigmented skin. OBJECTIVE: To describe the epidemiology and clinical profile of vitiligo patients at the dermatology clinic of an urban tertiary hospital of Lagos University Teaching Hospital. METHODS: All consecutive patients with a diagnosis of vitiligo seen at the Dermatology Clinic between October 2003 and October 2006, were included in the study. The diagnosis of vitiligo was made based on the clinical findings of depigmented macules or patches with a sharp margin, normal texture, intact sensations and no scaling. RESULTS: The diagnosis of vitiligo was made in 186 (2.8%) patients, with a slight female preponderance. Vitiligo affected all age groups: the youngest presented at age one and the oldest at eighty six years of age. The face and the limbs were the most affected parts of the body. Fifteen (0.81%) patients presented with features suggestive of associated autoimmune disease like, Type 1 Diabetes. CONCLUSION: The frequency of vitiligo in this study is similar to those obtained in previous studies from different parts of Nigeria. The patients will benefit from other modalities of management apart from the medical management offered hence a designated centre for management of vitiligo will be a respite to them.
