Varicella - Small ulcers on the back of the oral cavity and vesicular lesions on the scalp and trunk are common for Varicella. It is ruled out as the location of the infections are unilateral, unlike herpetic gingivostomatitis which is bilateral. Treatment
The aim of treatment is mostly supportive such as pain control, duration of symptoms, viral shedding and in some cases, preventing outbreak. Antibiotics are rarely prescribed to treat bacterial superinfection of oral lesions. Antiviral drugs are used to treat herpetic gingivostomatitis such as aciclovir, valaciclovir, famciclovir, and in resistance cases foscarnet can be used. Treatment does not prevent recurrence. Most individuals who are immunocompetent will fully recover from recurrent herpes labialis in 7 to 14 days. However treatment with antipyretics, oral anaesthetics and analgesics is often needed. In severe cases of herpetic gingivostomatitis, mouth rinses are useful in relieving oral discomfort. These contain topical anaesthetic agents such as lidocaine and diphenhydramine as well as coating agents such as magnesium-containing antacids. In order to prevent dehydration, oral fluid intake is encouraged. Other treatment options include good oral hygiene and gentle debridement of the mouth. A number of precautions can be taken to reduce the risk of infection of HSV including;

Avoid saliva exchange with those with active HSV
Avoid direct contact with active lesions (if contact occurred, ensure area is washed adequately)
Those with recurrent HSV can apply sunscreen lip balm as ultraviolet light is a stimulus for the infection

Epidemiology
See also
Acute necrotizing ulcerative gingivitis

References
External links

Underlying Causes at wrongdiagnosis.com
CDC Case Definition: Mercury (Elemental)
Hemimegalencephaly
Hemimegalencephaly is an extremely rare form of macrocephaly and is characterized by uneven development of brain hemispheres (one-half of brain is larger than other). The syndrome can be presented by itself or in association with phakomatosis or hemigigantism. Additionally, hemimegalencephaly will frequently cause severe epilepsy, focal neuro-logical deficits, macrocrania, and mild to severe intellectual disability. MCAP
Megalencephaly-capillary (MCAP) is one of the two major syndromes of megalencephaly. Typically, MCAP and MPPH can be distinguished by somatic features. MCAP includes many characteristics that are observed at birth including: cutaneous vascular malformations, especially capillary malformations of the face and cutis marmorata, polydactyly, connective tissue dysplasia, and focal or segmental body overgrowth. Furthermore, MCAP can occasionally be linked with asymmetric brain overgrowth (hemimegalencephaly) as well as segmental overgrowth of the body (hemihypertrophy). MPPH
Megalencephaly-polymicrogyria-polydactyly-hydrocephalus (MPPH) is one of the two major syndromes contributing to megalencephaly. Typically MCAP and MPPH can be distinguished by somatic features. In differentiation to MCAP, MPPH lacks consistent somatic features other than postaxial polydactyly. Furthermore, brain and body development is normally symmetric in the majority of patients that appear to have MPPH symptoms. Presentation
Autism
There is an extremely high association between megalencephaly and autism. Approximately 20% of autistic children have megalencephaly, making it the most common physical characteristic of autism. People who present both megalencephaly and autistic characteristics usually also show signs of hyperactivity as a major symptom.