Bicep and tricep muscles suddenly soft?!

Bicep and tricep muscles suddenly soft?

Several days ago I awoke one morning to a burning sensation in my arms. When feeling my arms, they felt unusually soft, particularly the bi's and tri's. Over the next several days they became more and more soft and I began to notice quite a significant decrease in size. Anyone else have this problem ever or no what this is about?

P.S.--Please dont give me answers on "how to workout" or anything like that. I am in very good health and I know what I am doing when it comes to weight training. This latest problem is just really bothering me becuase I pride myself on my arms and suddenly they seem to disappearing at a rapid rate.

PLEASE HELP!

1 week ago
And another note, this started the day after I received the meningitis vaccine in my right upper tricep? Possible relation?

maybe you're burning too much calories and did something the day before that included working out the biceps and triceps? *like lifting heavy loads or something...manual labour for example*...increase ur protein intake and do your usual workout routine