When it is cold, it will break out in a rash and itch all over. What's the matter? Is it syphilis?

Not syphilis! This symptom is related to allergies, namely allergic dermatitis (wind-cold rash). First of all, you may be allergic. If you are not sure that you can go to the hospital to test allergens, you can know whether you are allergic, what items, food and environment you are allergic to. In addition, you can take antiallergic drugs such as chlorpheniramine and chlorpheniramine. And you can take a bath with wormwood for external use, which can effectively prevent recurrence. Be careful not to scratch frequently when symptoms appear. You can take anti-allergic drugs and apply anti-allergic ointment to the affected area to avoid repeated scratching and infection.