Spiritual attack? (Day 4)

Today I have realized that some rashes have started to develop on my upper body, which are rather itchy. Immediately, I remember last year when I was fasting and praying, the rashes developed as well. But is it a physical side-effect of fasting? Or is it a spiritual attack? I tend to believe it's the latter - a spiritual attack, because of the following 2 reasons:

1. Several years ago, some rashes developed on my legs for no known reasons. I had to rely on medication etc to get rid of those. At that time, I was not fasting. Last year, when I started to fast, the rashes appeared on my upper body. This time, I have just started to fast, and the rashes re-appeared, making me uncomfortable.

2. Last year when I fasted, my wife had a rather unexpected eye infection or something. The specialist couldn't offer a reasonable reason of why. It lasted for a while. This time, when I was about to fast, my wife has started to have an acute headache which has lasted for a few days, until we together are concerned that it may be due to a spiritual reason - a spiritual attack. Therefore we prayed for spiritual discernment and God's protection.

I believe there is a valid reason for us to be "attacked" because the evil one doesn't want anyone coming near to God, not to mention fasting and praying for revival in churches.

How are you preparing yourself against the spiritual attack?