Hi, thanks for using healthcaremagic There may not be a link between the two symptoms. If the rash is itchy, then it may be an allergic reaction to something that came into contact with that area. This may be clothing, cream, soaps etc. Fungal rashes are also usually itchy but not usually widespread. Rashes can occur along with viral infections such as the cough/cold. Neck pain can very rarely be related to meningitis which is infection involving the nervous system. This can be associated with a rash but again this is usually a generalized rash. If the symptoms persist you may need to see your doctor for assessment. I hope this helps