Organisations working at the global and regional level will often focus much of their efforts on helping hungry communities to better feed themselves, for example by sharing agricultural technology. With some exceptions, organisations that work just on the local level tend to focus more on providing food directly to hungry people. Many of the entities are connected by a web of national, regional and global alliances that help them share resources, knowledge, and coordinate efforts. Global
The United Nations is central to global efforts to relieve hunger, most especially through the FAO, and also via other agencies: such as WFP, IFAD, WHO and UNICEF. After the Millennium Development Goals expired in 2015, the Sustainable Development Goals (SDGs) became key objectives to shape the worlds response to development challenges such as hunger. In particular Goal 2: Zero Hunger sets globally agreed targets to end hunger, achieve food security and improved nutrition and promote sustainable agriculture.Aside from the UN agencies themselves,  hundreds of other actors address the problem of hunger on the global level, often involving participation in large umbrella organisations. These include national governments, religious groups, international charities and in some cases international corporations. Though except perhaps in the cases of dedicated charities, the priority these organisations assign to hunger relief may vary from year to year. In many cases the organisations partner with the UN agencies, though often they pursue independent goals.
Acquired idiopathic generalized anhidrosis (AIGA) is characterized by generalized absence of sweating without other autonomic and neurologic dysfunction.AIGA is classified into 3 subgroups: idiopathic pure sudomotor failure (IPSF), sweat gland failure (SGF), and sudomotor neuropathy, with each subgroup presenting a different pathogenesis. Diagnosis
Quantitative sudomotor axon reflex test and microneurography are used in the diagnosis of AIGA. However, these refined methods are mostly used for research purposes and not generally available.Skin biopsy analysis may play a crucial role in the identification of AIGA subgroups. See also
Hypohidrosis

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