Developing psychiatric services for disaster-affected populations in a place with meagre resources is a challenge, especially if the place is remote and offers limited access, and the weather conditions are harsh. The earthquake in October 2005 posed just such a challenge (Makhdum & Javed, 2005). Massive damage was reported from Pakistan, as the epicentre was in Muzaffarabad, in Pakistani-controlled Kashmir. There was also extensive damage to life and property in some areas of Kashmir in India. The road and communication network had been completely destroyed in many of the affected areas.

The tsunami which affected South Asia on 26 December 2004 caused over 41 000 deaths in Sri Lanka, representing 0.2% of the total population, and displaced over 880 000 people from their homes and livelihoods (World Health Organization, 2004). Kilinochchi, Jaffna and Mullativu districts in the Northern Province of Sri Lanka were affected by the tsunami and, as of April 2005, in the whole province, 6200 people had lost their lives, 961 were still missing, 19 618 were still housed in welfare centres and 45 548 were housed with relatives and friends (Government of Sri Lanka, 2005).

Different kinds of disaster create dissimilar conditions for survivors, and the specific realities associated with each must guide our helping responses. This in no way negates the importance of having general principles to follow in responding to major disasters (Sphere Project, 2004; van Ommeren et al, 2005).

The Republic of Belarus (ROB) covers 207 600 km2 and has a population of about 10 million (Ministry of Statistics and Analysis, 2005). It was a member state of the former Soviet Union until it gained independence in 1991. Belarus is located between Poland, Lithuania and Latvia in the west, Russia in the east, and Ukraine in the south. Seventy-two per cent of the population live in an urban environment and 28% in rural areas. The average life span for men is 63 years and for women 75 years (Ministry of Public Health, 2005).

Papua New Guinea is an independent commonwealth in the South Pacific, lying just north of Australia and sharing its western border with Indonesia. The population of Papua New Guinea is 5.2 million, of whom 87% live in rural areas (2000 census) (National Statistics Office, 2003). The country has a very rich culture; for example, there are over 800 distinct language groups (although Papua New Guinea has less than 0.1% of the world's population, it is home to over 10% of the world's languages).

The People's Republic of Bangladesh is located in South Asia. The total land area of Bangladesh is 147570 km2. Its total population in 2001 was about 123 million. The population growth rate is 1.47%; of the total population, 75% live in rural areas and 25% in urban areas (Bangladesh Bureau of Statistics, 2000).

Two conditions greatly encourage the folk use of plants to cure diseases and alleviate ailments:

1. ∘ plant biodiversity (the richer the better)

2. ∘ particular cultural traits of local populations.

Where these conditions are met, local scientific advancement may result from experimentation with and elaboration of folk remedies. Unfortunately, little scientific research has been done on South American plants that may be useful in the treatment of central nervous system (CNS) disturbances.

At 8.52 a.m. on 8 October 2005 an earthquake measuring 7.6 on the Richter scale struck the northern part of Pakistan and devastated large areas of North West Frontier Province and Azad Kashmir. Almost 90 000 people died and many thousands were reported missing. Half the dead were estimated to be children, killed in their classrooms. Some 3.5 million people were rendered homeless. The mountainous terrain made relief work a logistical nightmare.