Aphasia

Aphasia is a total or partial loss of the ability to use or understand language; usually caused by stroke, brain disease, or injury. Aphasia may affect both written and spoken language.
http://www.asha.org/public/speech/disorders/Aphasia_info.htm
http://www.aphasia.org

Articulation & Phonological Disorders

Disorders of articulation or phonology result in reduced intelligibility of overall speech due to errors in production of speech sounds.
http://members.tripod.com/Caroline_Bowen/parentinfo.html
http://www.kidsource.com/ASHA/articulation.html

Central Auditory Processing Disorder

Central auditory processing disorders are deficiencies in sound localization and lateralization, auditory discrimination, auditory pattern recognition, temporal aspects of audition, and other elements that determine how our brains process the sounds we hear.
http://kidshealth.org/parent/medical/ears/central_auditory.html
http://www.nidcd.nih.gov/health/voice/auditory.asp
http://childrentoday.com/resources/articles/capd.htm

Childhood Apraxia of Speech

Children with apraxia of speech generally can understand language much better than they can use it to express themselves. Apraxia affects the ability to sequence sounds into syllables and words. It is not due to any muscle weakness or paralysis. http://www.asha.org/public/speech/disorders/childhood-apraxia.htm http://www.apraxia-kids.org

Cochlear Implants

http://www.asha.org/public/hearing/treatment/cochlear_implant.htm http://www.nidcd.nih.gov/health/hearing/coch.asp

Developmental Language Disorders

http://members.tripod.com/Caroline_Bowen/devel1.htm http://www.kidsource.com/NICHCY/speech.html

Dysarthria

Dysarthria refers to a speech difficulty due to problems with the muscles of the lips, tongue, palate, and/or vocal cords while speaking. It may be due to brain damage or disease.
http://www.asha.org/public/speech/disorders/dysarthria.htm

Feeding & Swallowing

Feeding and swallowing difficulties can occur at any age. They may be related to premature birth, stoke, or neurological disease to name just a few.
http://www.asha.org/public/speech/swallowing
http://www.nidcd.nih.gov/health/voice/dysph.asp

Fluency/Stuttering

http://www.asha.org/public/speech/disorders/stuttering.htm
http://www.nsastutter.org http://www.stutteringhelp.org

Hearing Loss

http://www.asha.org/public/hearing/disorders/

in Children http://www.asha.org/public/hearing/disorders/causes.htm
http://www.pamf.org/hearinghealth/facts/children.html

in Adults http://www.asha.org/public/hearing/disorders/causes_adults.htm
http://www.shhh.org