1. Difficulty with social interaction: this starts from infancy (3 months) and includes poor eye contact, doesn’t smile, doesn’t engage with others.
2. Little or no babbling, no vocal play, your child only makes a few sounds, little use of gesture (from 7 months onwards): this indicates communicative intention and speech development may not be happening
3. People, other than you/direct family members, have difficulty understanding your child i.e. their speech and sentence structure is incomprehensible and doesn’t make sense, from 18 months upwards.
4. By 2 years old, your child has not started combined 2-words: these include simple combinations like ‘come mama’, ‘ta juice’ etc.
5. Speech sounds develop at each age-level, if your child is having difficulty producing certain sounds, difficulty imitating sounds and words or struggles to get a sound out, consult a speech therapist.


