Thuja and Apis might have some of the symptoms you describe, but so do many, many other remedies.
For chronic problems, it's best to see a skilled homeopath who can look at the whole case. When it's a matter of an acute or self-limiting condition like colds, flu, insect bites, sunburn, etc., then you can use homeopathic self-help books to find remedies. But for chronic issues, even a skilled homeopath can't recommend a remedy without looking at the larger context.