My son has Hemogloblin SC Disease.  He currently has three ringworms in his head; Im concerned it may cause a fever.  He was given topical cream for a ringworm on his neck, that cleared up and Selsun Blue for the scalp.  I am concerned the ringworms may cause a fever; since theyre reoccuring. What do you think?
Ringworm is a fungal infection of the skin. It does not generally get into body organs or cause a fever. It often reoccurs as spores may be present in the environment or skin and contact with them may cause them to regenerate. Pets often are carriers of this fungus, so that is a possible cause of recurrence. But there is no need to be concerned about fever. Hope this helps.