An acute viral illness characterized by ulcers and lesions covering the tongue soft palate, tonsils or insides checks or gums .
Causes, Incidence and Risk factors:
This is a viral disease unusually seen in adults, resulting from reactivation of chicken pox virus lying dorment on dorsal root ganglia.
Herpes Simplex : It is caused by DNA Virus
Herpes Zoster : Due to Re-activation of varicella zoster virus (chicken pox) Herpes Zoster patients can transmit chicken - pox to others.