Malocclusion is any variation in the arrangement of teeth leading to abnormal occlusion to the extent that may be functionally harmful or aesthetically objectionable.
Edentulousness refers to the partial or complete loss of natural teeth, resulting in progressive resorption of the alveolar bone, impairment of oral function, and alteration of facial structure.
Eruption of deciduous /primary teeth usually starts at five months of age. Symptoms associated with it like fever and diarrhea are normal and self limiting unless any other causes can be established.