chihuahua has bumps and is scratching

Question
This morning, I noticed bumps all over my Chihuahua and she is scratching, not too much, but often.  One of her eyes is also swollen red and her vagina is also red.  Any advice?

Answer
Hi Elizabeth!
The scratching could be caused by numerous things. It could be fleas. One flea will drive a dog crazy if they are allergic to fleas.  It could be mites, mange,allergies, etc.  Since her eye is swollen, it sounds like allergies, but that's only a guess.  If you want to give her something to ease the scratching, you can give her Benadryl. Be sure to read the directions below carefully. If she doesn't get better by Monday, you may want to take her to a Vet.
God Bless,
Becky

Benadryl for Dogs or Cats

Benadryl is a brand name for an anti-histamine (diphenhydramine).  Although it is considered fairly safe for use in dogs and cats,  please be aware that it does have potential adverse side effects.  It may interact with other meds that your pet is taking, so do not use it without first consulting your veterinarian. You should also use extreme caution using Benadryl in dogs that have glaucoma, prostatic disease, cardiovascular disease or hyperthyroidism.  

Benadryl is quite effective when used in proper dosages.  
Stops itching
Controls vomiting
Good for motion sickness
Can be used as a mild tranquilizer
Good for snake bites
Useful for vaccination reactions
Good for bee stings and insect bites

Be sure to use only the plain Benadryl formula. Giving benadryl with other combination of meds could be fatal, so be sure to read the box.

Liquid Benadryl is too high in alcohol content to be safely used for animals.  Please use capsule or pill form.  

Dosage every 8 hours
Dogs under 30 lbs and Cats :  10 mg
Dogs 30-50 lbs:  25 mg
Dogs over 50 lbs: 50 mg