A public health approach for leprosy detection based on a very short term-training of primary health care workers in basic dermatology.

INTRODUCTION: In countries where leprosy control is integrated to general heath services, health workers, at primary health care level, often manage a large number of patients with skin diseases including leprosy. The distinction of leprosy from others skin diseases requires more skill and attention. Basic dermatological knowledge will help these staff to provide a better quality of care. A few years ago, a short term training programme focussed on leprosy and some common skin diseases was set up in Mali through a pilot project. This study will evaluate the impact of this training on the detection of leprosy at primary health care level. METHODS: health care workers from two health districts were invited to participate in the training. Trainee was submitted to an anonymous written test before training, immediately after and 12-18 months post-training using a standardized scoring system. The suspected or referred leprosy cases before and after training were compared. Data were recorded and analysed with the software Epi info version 6.04. RESULTS: Overall, 495 HCW attended the three anonymous written tests (before training, just after and 12-18 months later). The proportion of participants who gave correct answers before training, just after were respectively: 33 and 57% for correct diagnosis, 5 and 39% for test of sensation and 28 and 47% for referral. Eight patients suspected of leprosy were referred for further examination; in these, five cases of leprosy were detected. DISCUSSION: The training showed a huge improvement in the skill of the participants in managing leprosy patients. This study addresses how leprosy control can be improved by involving primary health care staff and by the implementation of only a single day's training on basic dermatology. CONCLUSION: The role of the dermatologist in this post-elimination era of leprosy needs to be reconsidered and adapted to the increasing need to take multiple programmes, inclusive of dermatology and leprosy, into primary health care services and those interested in leprosy control should fund these programmes.

High prevalence of non-leprotic hypochromic patches among children in a rural area of Mali, West Africa.

The identification of one or several hypochromic patches (HP) on the skin is a key stage in the diagnosis of leprosy on dark skin. However, HP are often caused by other disorder than leprosy. A study to determine the prevalence and causes of HP among children was carried out in a rural area of Mali in November 2001. All children under 15 years of age in two villages in an endemic area were screened by two dermatologists. Among the 1729 children seen, HP were identified in 71 patients, with a prevalence of 4.1%. The most common cause of HP was tinea versicolor, which was present in 39.4% of children with HP, followed by pityriasis alba in 31%, naevus achromicus in 24% and vitiligo in 5.6%. No case of leprosy was detected. Our study raises several points with practical consequences for the detection of leprosy cases: the high prevalence of non-leprous HP compared to leprosy, the reliability of the clinical diagnosis of leprosy, and the role of general health care workers in the detection of leprosy cases. Helping those who should be involved in that detection in distinguishing true cases from other hypochromic disorders appears to be a priority.