Definition (extract from the NINDS factsheet, see below) Megalencephaly, also called macrencephaly, is a condition in which there is an abnormally large, heavy, and usually malfunctioning brain. By definition, the brain weight is greater than average for the age and gender of the individual.
Megalencephaly: factsheet from NINDS, the National Institute of Neurological Disorders and Stroke (US site)
PubMed Medline search on megalencephaly
Has information on over 1,000 rare syndromes and rare disorders and can put families in touch with each other. Also gives access to a database on rare conditions and disorders.
Brain and Spine Foundation
Information on living with a neurological condition and on diagnosis. There are publications and resources. The useful glossary of neurological conditions (under 'Information and support') includes links to some other organisations as well as to Brain and Spine Foundation information.
Healthtalk: nerves and brain
Personal experiences of people living with various neurological conditions.
Collective voice for 80 organisations, including stroke and brain injury. Organisations are listed at https://www.neural.org.uk/our-members/, a good place to start if looking for information on those conditions. Site also includes information about living with a neurological condition, a glossary, and information about onset and diagnosis as well as a small set of real life stories. .
NHS Inform: brain, nerves and spinal cord
NHS inform is Scotland's national health information service, with the aim of providing the people in Scotland with accurate and relevant information to help them make informed decisions about their own health and the health of the people they care for.