There is a strong association between eczema and childhood asthma. This association has been documented in pre-adolescence,
adolescencePuberty and adolescence and adult life, into middle age. If one or both parents have a history of eczema and/or asthma, the incidence of combined asthma and eczema is even higher. That being the case, does not necessarily mean that your son has asthma; just that his odds of having it are higher than in children similar to him, but without eczema.
However having a “rattling in his breathing for 4 weeks” is not a basis for making the diagnosis of asthma. Four weeks is more consistent with an
acuteAcute bilateral obstructive uropathy
Acute bronchitis
Acute cerebellar ataxia
Acute cholecystitis (gallstones)
Acute cytomegalovirus (cmv) infection
Acute gouty arthritis
Acute hiv infection
Acute kidney failure
Acute lymphocytic leukemia (all)
Acute lymphocytic leukemia - photomicrograph
Acute pancreatitis, usually viral, respiratory infection. That his Pediatrician has observed it to be “coming from high up”, further weakens the likelihood that this is asthma. Trust his Pediatrician and if the rattle persists, for a couple months or more, you might want to have your son’s lungs reevaluated.
Good luck