Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services if a baby or child has:
Seek urgent medical assessment for a fever in a baby younger than 3 months, poor feeding with fewer wet nappies, repeated vomiting, worsening jaundice, a bulging soft spot, or new unusual movements.
These symptoms have many possible causes and do not prove toxoplasmosis, but young babies need prompt assessment.
New blurred vision, floaters, eye pain, redness, or sensitivity to light needs prompt eye assessment because it may indicate active retinal inflammation.
Contact the specialist team promptly if a child taking treatment develops a widespread rash, mouth sores, unusual bruising, marked paleness, persistent fever, or severe vomiting.
Routine follow-up remains important when a child appears well.
Attend planned blood tests, eye examinations, hearing checks, and developmental reviews.
Between visits, mention changes in vision, hearing, school progress, movement, or behaviour.
Every sign above is quoted from the sofidex article on Congenital toxoplasmosis. If you are not sure, err upward — it is always reasonable to be checked.