If you are not in a position to seek medical help, there are certain common remedies you can try at home in order to sooth the itching and the redness.
For one, coconut oil and aloe vera both work well as moisturizers and can soften thick scales if let on the scalp for several hours or overnight. A diluted apple cider vinegar solution may reduce itchiness because of its natural antiseptic action. Gentle, controlled exposure to sunlight can also help slow the rapid turnover of skin cells.
Of course, it’s always for the best to visit a doctor in order to get proper diagnosis and a proper treatment for any issues you experience with your scalp.