It is very common to catch a cold in winter. To prevent them, I highly recommend getting an annual flu vaccine and practising frequent hand hygiene. Keeping yourself warm, staying well-hydrated, and maintaining a balanced diet will also support your immunity. For treatment, plenty of rest and warm fluids are essential. You can use saline nasal sprays or steam inhalation to relieve congestion. For symptom relief, paracetamol helps with body aches or fever, cetirizine can ease a runny nose, and dextromethorphan can quiet a dry cough. If your symptoms worsen or last more than ten days, please consult a healthcare professional for a checkup.

For temporary relief from widespread itching, you can take an over-the-counter oral antihistamine (like Cetirizine 10mg once daily) and apply soothing Calamine lotion to the affected areas. Avoid hot showers and try not to scratch, as scratching worsens the marks and increases infection risk. Because your symptoms are severe, widespread, and leaving spots, they could indicate an allergic reaction, hives, or another underlying skin condition. Please consult a doctor or dermatologist immediately for a proper diagnosis before using any strong prescription steroid ointments, as the wrong treatment can worsen your condition.