[35F] With sudden onset of hives

What might be happening

Based on the information you've provided, here are some possible explanations for your hives:

• Acute Urticaria (Hives): This is a common skin reaction that can occur due to various triggers, including stress, infections, or unknown causes. Since you haven't identified a specific trigger, it might be idiopathic, meaning the exact cause is unknown. Hives can appear suddenly and are often itchy.

  • Treatment: Typically involves antihistamines to reduce itching and swelling. Over-the-counter options like cetirizine (Zyrtec) or loratadine (Claritin) can be effective. If the hives persist or worsen, a healthcare provider might prescribe stronger medications.

• Allergic Reaction: Although you haven't been exposed to known allergens, it's possible that a new or hidden allergen could be responsible. This could include something in your environment or a new product you've used.

  • Treatment: Avoidance of the allergen once identified, and antihistamines to manage symptoms.

• Physical Urticaria: Sometimes, hives can be triggered by physical factors like pressure, temperature changes, or even stress. Since you mentioned lying in bed, pressure or heat might have played a role.

  • Treatment: Avoiding known physical triggers and using antihistamines to manage symptoms.

What you can do

1. Antihistamines: Consider taking an over-the-counter antihistamine to help reduce the itching and swelling. Always follow the dosage instructions on the package or consult with a pharmacist.

2. Cool Compresses: Continue using cool compresses or ice packs to soothe the affected areas. This can help reduce itching and swelling.

3. Avoid Known Allergens: Since you have allergies to soy, egg whites, and pigweed, ensure you're not inadvertently exposed to these allergens.

4. Track Your Symptoms: Use MDandMe to journal your symptoms, track any potential triggers, and monitor your progress. This information can be valuable for your healthcare provider.

What you should look out for

Seek medical attention if you experience any of the following:

• Difficulty Breathing or Swelling: If you notice any swelling of the lips, tongue, or throat, or if you have trouble breathing, seek emergency medical care immediately.

• Persistent or Worsening Symptoms: If your hives do not improve with over-the-counter treatments or if they persist for more than a few days, consult a healthcare provider.

• New Symptoms: If you develop additional symptoms such as fever, joint pain, or a rash that spreads, it's important to seek medical advice.

Remember, while this advice can help manage your symptoms, it's important to consult with a healthcare professional for a formal diagnosis and treatment plan.