Why do i have dry skin, weird rashes, tiredness and stress?

Rule out low thryoid: You should see a doctor to have your thyroid checked and find out what the rash is. If s/he thinks you are depressed or nervous, s/he may treat you or refer you to a psychologist or psychiatrist depending on the severity of the situation. Most psych conditions, even if brought on by a physical problem, respond best to a combination of therapy and medications, especially medications if severe.