Speech disorders include:

• Articulation disorders:
  Difficulties producing sounds in syllables
  or saying words incorrectly to the point
  that listeners can't understand what's being said.
• Phonological disorders:
  Difficulties in speech sound patterns.
• Fluency disorders:
  Problems such as stuttering, in which the flow
  of speech is interrupted by abnormal stoppages,
  repetitions (st-st-stuttering), or prolonging sounds
  and syllables (ssssstuttering).
• Resonance or voice disorders:
  Problems with the pitch, volume, or quality of the
  voice that distract listeners from what's being said.
• Motor speech disorders such as Apraxia of Speech (AOS):
  Difficulties saying what is wanted to say correctly and consistently.

 

Language disorders can be either receptive or expressive:

• Receptive disorders:
  Difficulties understanding or processing language.
• Expressive disorders:
  Difficulty putting words together, limited vocabulary,
  or inability to use language in a socially appropriate way.
• Pragmatic/social aspects of communication:
  Difficulties using language, changing language
  and following conversational rules.
  

 

Dysphagia/oral feeding disorders:

• These include difficulties with drooling, eating, and swallowing.

 

Cognitive aspects of communication:

• Difficulties with attention, memory, problem solving
  and executive functions.

• American Speech Language Hearing Association
• California Speech Language Hearing Association
• Autism Speaks
• The Childhood Apraxia of Speech Association of North America (CASANA)
• In-Depth Timely Education & Healthcare Information
• The Stuttering Foundation
• Autism Society of America
• National Aphasia Association
• Special Education Guide
• AAC intervention