Fibroblasts also appear to secrete various biological substances, including the Vascular Endothelial Growth Factor (VEGF), which is suggested to promote the formation of new blood vessels
It is thought that many chronic illnesses, including ME/CFS, originate with reactivation of latent or dormant viruses that are present in the body, caused by a change in physiological conditions (127)
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However, in some cases, the condition may recur if treatment is not continued
Example weekly step-up schedule Educational references usually start low and increase every 4 weeks
The prescribing information states "colorless to slightly yellow," so a very subtle yellow is perfectly normal