What complications could happen if I apply henna on my child with a G6PD condition?

Following a chicken pox infection, the varicella zoster virus that causes chicken pox persists in the body and resides and remains dormant in the nerve ganglion. When the virus reactivates, it results in Herpes zoster and presents as painful red rashes with blisters along the along distribution of the nerve. The varicella zoster virus causes both chicken pox and herpes zoster. It is very unlikely to get herpes zoster without previously having had a chicken pox infection. It is possible that the past history of chicken pox was not recalled or it was a mild infection that went unnoticed.

This is actually quite controversial. I think what you’re asking is if someone has osteoporosis and is taking the drug -- oral bisphosphonates are the drugs that actually prevent the bone from turning over. If you've been taking oral bisphosphonates for more than 5 years - I wouldn’t say it’s an absolute contraindication. There are some studies that actually show that if you stop it for a certain amount of time, the blood supply can actually return. But the thing is that no one actually knows, and if you look at the research no one actually knows how well it stops it.