Hello and welcome to HCM,
An increased red blood cell distribution width above the normal range indicates a variation in the size of the red blood cells.
This variation is seen in anemias like
iron deficiency anemia,
thalassemia,
sideroblastic anemia, and lead toxicity/
poisoning.
You need to get red cell indices done for more information.
For the enlarged lymph nodes, a fine needle aspiration needs to be done. This test samples cells from the enlarged lymph nodes and are stained to know the exact origin of the swelling and character of the cells.
The ulcers in the mouth can occur due to many reasons like apthous ulcers, infections, nutritional deficiencies, etc.
Red patches all over the body can also be due to many reasons.
Low
platelet count can lead to pin head sized red spots.
Viral infections can also lead to red colored patches.
Consult your physician for clinical examination, relevant investigations (red cell indices, platelet counts, etc) and appropriate management.
Thanks and take care
Dr Shailja P Wahal